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Handshake

A handshake is a clasping and shaking of hands, typically the right hands, by two individuals to signify greeting, agreement, farewell, or congratulations.^[1]^[2]
The gesture traces its origins to ancient civilizations, with the earliest known depictions appearing in a ninth-century BCE Assyrian relief showing King Shalmaneser III extending his hand to Marduk-zakir-shumi I of Babylon, symbolizing alliance and mutual recognition of authority.^[3]
Interpreted as a practical signal of unarmed intent—revealing empty hands to demonstrate absence of weapons—the handshake embodies trust and cooperative disposition across cultures, from ancient diplomatic encounters to modern business interactions.^[4]^[5]
Its execution varies globally: firm grips convey confidence in Western professional settings, while lighter touches or left-hand alternatives appear in certain African or Islamic traditions to accommodate hygiene customs; refusals occur in contexts prioritizing physical separation, such as religious observances or health crises like the COVID-19 pandemic, which reduced its prevalence and spurred elbow bumps as substitutes.^[6]^[7]^[8]

Historical Origins

Prehistoric and Ancient Roots

![Shalmaneser III greets Marduk-zakir-shumi, detail from the front panel of the Throne Dais of Shalmaneser III at the Iraq Museum][float-right] The handshake likely originated in prehistoric times as a non-verbal signal of peaceful intent, whereby individuals extended empty right hands to demonstrate the absence of concealed weapons during intergroup encounters. This gesture facilitated initial trust by exposing vulnerability, aligning with the practical need for disarmament rituals in human societies prone to conflict over resources. While no direct archaeological evidence survives from prehistory due to the perishable nature of such interactions, the theory draws from consistent ethnographic patterns in tribal greetings and the biomechanics of hand extension as a universal disarmament cue.^[4] The earliest known depiction of a handshake appears in a relief from the reign of Assyrian King Shalmaneser III (r. 859–824 BCE), showing him clasping hands with Babylonian king Marduk-zakir-shumi I to seal a treaty following Assyrian aid against rebels around 851 BCE. Carved on the front panel of Shalmaneser III's throne dais, now housed in the Iraq Museum, this scene illustrates the handshake as a formal emblem of alliance and mutual non-aggression between sovereigns. The artifact underscores the gesture's role in diplomacy among Mesopotamian powers, predating written contracts in some contexts as a tactile affirmation of pact integrity.^[9] In ancient Greece, handshakes termed dexiosis emerged by the 5th century BCE, frequently portrayed in funerary stelai and votive sculptures as symbols of oaths, agreements, or enduring bonds. Examples include Attic grave markers from circa 450–400 BCE depicting clasped hands between the deceased and relatives, signifying farewell or perpetual connection rather than mere greeting. These representations, found in contexts like the Kerameikos cemetery, reflect the handshake's integration into rituals of commitment, distinct from verbal vows, and highlight continuity from Near Eastern precedents into Hellenic custom without reliance on mythic origins.^[10]^[11]

Classical and Medieval Developments

In ancient Greece, the handshake, known as dexiosis, emerged by the 5th century BC as a gesture symbolizing peace and trust, often depicted in funerary stelae to signify farewell or bonds between the deceased and the living.^[10] Archaeological evidence from this period illustrates clasped right hands, interpreted as demonstrations of unarmed intent and mutual assurance in social and possibly judicial contexts, as referenced in Homeric epics where physical gestures reinforced oaths and alliances.^[11]^[12] The practice extended into ancient Rome as dextrarum iunctio, employed ceremonially to denote friendship, loyalty, and political concord, with representations appearing on coins and in legal agreements to seal pacts.^[13] Roman sources indicate its use in alliances and oaths, providing a tangible affirmation of commitments amid hierarchical societal structures.^[14] During the medieval period in Europe, the handshake adapted within chivalric codes, where knights clasped hands to affirm fealty and loyalty, contrasting with the more formalized oaths of kneeling vassals in feudal hierarchies.^[15] This gesture underscored personal bonds in a era dominated by manorial oaths, though it remained secondary to verbal and symbolic rituals of homage.^[16] By the 17th century, Quakers in Britain promoted the handshake as an egalitarian alternative to hierarchical greetings like bowing, emphasizing equality in social and religious interactions as a rejection of class distinctions.^[13] This shift, rooted in their principles of plain speech and conduct, helped propagate the gesture's use in sealing agreements without deference to status.^[17]

Modern Standardization

In the 18th and early 19th centuries, the handshake gained traction in Britain among mercantile communities and Quakers, who employed it as an egalitarian alternative to hierarchical greetings like bowing, reflecting principles of equality in trade and religious fellowship.^[18] This diffusion occurred through expanding commercial networks in urbanizing areas, where it signified mutual trust and reliability in business dealings, gradually extending to middle- and upper-class interactions by the 1830s.^[17] By the mid-19th century, British and American etiquette manuals codified the handshake as a standard greeting, prescribing a firm grip with palms fully clasped vertically to convey sincerity, strength of character, and parity between participants. Works such as those from the Victorian era emphasized avoiding limp or overly aggressive shakes, positioning the gesture as essential for social and professional reliability, particularly in opposite-sex or initial male acquaintances.^[19] This standardization aligned with industrial-era values of individualism and contractual assurance, influencing protocols in emerging global trade hubs. The practice proliferated worldwide from the late 19th century onward via British colonial expansion, European mercantile routes, and diplomatic exchanges, supplanting local customs in formal contexts like commerce and treaties.^[20] By the early 20th century, it had become the predominant greeting in Western-influenced diplomacy and business, as evidenced by its routine depiction in international accords and photographs of leaders sealing agreements, though exceptions persisted in cultures favoring bows or other rituals. Post-World War II pacts, such as those formalizing Allied victories, further entrenched it symbolically as a marker of reconciliation and pact ratification.^[17]

In Western Societies

In Anglo-American societies, the handshake functions primarily as a gesture of greeting upon introductions, parting during farewells, and affirmation in informal agreements, where a firm grip traditionally signifies confidence and personal integrity.^[21]^[22] This practice underscores social equality by placing participants on the same physical level, contrasting with hierarchical gestures like bowing, and fosters mutual trust through direct, unarmed contact.^[23]^[24] Historically, handshakes in professional and business contexts were male-dominated, with women adapting through lighter grips or alternative salutations such as nods; empirical studies confirm persistent gender disparities, with women's handshakes exhibiting lower strength, vigor, and duration compared to men's.^[25] In modern Western professional settings, however, women increasingly participate in handshakes, and surveys indicate that Western individuals, particularly women, evaluate interactions involving them more positively than alternatives.^[26]^[27] Handshake deals hold cultural and sometimes legal significance in U.S. rural economies, particularly agriculture, where verbal agreements sealed by handshake rely on established community trust rather than written contracts alone; such pacts can be enforceable as oral contracts if they satisfy elements like offer, acceptance, and consideration, though the Statute of Frauds mandates writing for certain transactions exceeding specified values or durations.^[28]^[29]^[30] This approach reflects causal reliance on repeated interpersonal interactions to build enforceable expectations, supplementing formal law in low-information environments.^[31]

In Non-Western Contexts

In Islamic cultures across the Middle East and parts of South Asia, handshakes are typically performed exclusively with the right hand, a practice rooted in religious hygiene norms that designate the left hand for personal sanitation tasks, reserving the right for social and ritual purity.^[32]^[33] Ethnographic observations confirm this unilateral preference persists in greetings among men, with women often exempt from cross-gender handshakes to maintain modesty, though verbal salutations like "As-salaam alaikum" accompany the gesture to reinforce communal bonds.^[34] African handshake customs exhibit regional diversity, often extending beyond a single grip to prolonged or multi-stage sequences symbolizing respect and rapport. In West African Mande communities, for instance, the initial clasp transitions into a extended verbal exchange of inquiries about family and health, blending physical contact with oral traditions to affirm social ties.^[35] Southern African variants, such as in Namibia or Zimbabwe, may incorporate thumb-locking or sequential grips held longer than in Western norms—up to several seconds—to convey warmth and hierarchy awareness, with elders receiving firmer or more deliberate holds.^[36]^[37] These adaptations underscore the gesture's role in negotiating status without verbal dominance. In East Asia, traditional bows dominate domestic interactions, yet handshakes have gained traction in commercial settings due to global interoperability. Chinese etiquette integrates a light, non-vigorous handshake with a subtle nod or shallow bow, prioritizing harmony over assertiveness and reflecting Confucian deference modulated for international exchanges.^[38]^[39] Japanese and Korean business protocols similarly hybridize: a bow precedes or follows a gentle two-handed clasp with foreigners, with adoption rates rising post-1990s globalization—evidenced by corporate training manuals emphasizing reciprocal handshakes to facilitate trade without cultural friction.^[40]^[41] This pragmatic shift, observed in multinational firms since the early 2000s, demonstrates handshaking's utility as a neutral trust signal amid economic interdependence, rather than cultural imposition.^[42]

Applications in Business and Diplomacy

In business negotiations, the handshake serves as a nonverbal cue signaling cooperative intent, which empirical studies link to improved outcomes. Experimental research demonstrates that negotiators who engage in a handshake prior to integrative bargaining achieve higher joint gains compared to those who do not, with the effect mediated by increased openness and reciprocity.^[43] ^[44] This ritual fosters a cooperative mindset, leading to agreements that better satisfy both parties' interests over purely distributive tactics.^[45] Within professional hiring contexts, a firm handshake correlates with perceptions of reliability and positive personality traits, influencing interviewers' evaluations. Analysis of employment interviews shows that applicants with vigorous handshakes receive higher ratings, particularly when combined with eye contact, as this conveys extraversion and emotional expressiveness rather than shyness.^[46] ^[25] Such impressions contribute to hiring decisions based on observable signals of competence and trustworthiness, supported by data from structured interview assessments.^[47] In diplomacy, handshakes have historically punctuated summits to affirm commitments and facilitate de-escalation. The 1972 handshake between U.S. President Richard Nixon and Chinese leader Mao Zedong marked a pivotal step toward U.S.-China rapprochement, easing Cold War tensions through symbolic mutual recognition.^[48] Similarly, the 1985 Geneva Summit handshake between U.S. President Ronald Reagan and Soviet leader Mikhail Gorbachev initiated dialogue on nuclear arms reduction, contributing to subsequent treaties that reduced escalation risks.^[49] These instances illustrate the handshake's role in endorsing agreements with visible pledges of intent, distinct from formal signatures.

Scientific and Psychological Dimensions

Evolutionary and Chemosensory Functions

The handshake has been hypothesized to serve an evolutionary function in social chemosignaling, facilitating the subliminal transfer and detection of chemical cues between individuals, analogous to scent-marking behaviors observed in other mammals such as rubbing or grooming to exchange odors for recognition, territory marking, or kin assessment.^[50] In non-human primates and rodents, physical contact routinely transfers volatile compounds from sebaceous glands and apocrine sweat, which convey information about identity, health, or reproductive status, suggesting a conserved mechanism that could underpin human greeting rituals.^[51] However, direct phylogenetic evidence linking handshakes to these ancestral behaviors remains speculative, as human-specific adaptations like bipedalism and tool use may have repurposed upper-limb contact for olfactory exchange rather than deriving straightforwardly from primate analogs.^[52] Empirical support for a chemosensory role in handshakes emerges from controlled observations demonstrating increased self-sniffing of the hand post-contact. A 2015 study at the Weizmann Institute of Science analyzed 271 participants in real-world greeting scenarios, finding that individuals sniffed their own right hand more than twice as frequently—and for longer durations—following a handshake compared to after non-contact introductions like a wave or verbal greeting.^[50] This effect was most pronounced after opposite-gender handshakes, with sniffing time increasing by over 100% relative to same-gender interactions, and was lateralized: the right (dominant) hand was preferentially sniffed after right-handed grips, indicating a targeted olfactory sampling rather than incidental behavior.^[51] Hidden cameras and motion-tracking confirmed the sniffing as unconscious and selective, occurring within 60 seconds of the handshake in most cases.^[53] Mechanistically, handshakes enable the transfer of skin-bound volatile molecules, including those from sweat and cutaneous bacteria, which persist on the palm for detection. Laboratory assays in the same study verified that handshake friction deposits detectable odors, akin to how mammals exchange pheromones via direct touch, with compounds such as androstadienone (a putative human chemosignal) shown in prior work to influence mood and social perception when transferred similarly.^[50] Persistence of these scents was quantified through gas chromatography in related experiments, revealing that transferred volatiles remain olfactorily salient for minutes to hours, sufficient for subconscious processing via the vomeronasal organ or main olfactory epithelium.^[51] While pathogens transfer via the same route—evidenced by bacterial counts rising 2- to 10-fold post-grip in hygiene studies—this does not negate chemosignaling utility, as evolutionary pressures could favor dual-purpose contact balancing risk and informational gain.^[50] Critically, these findings rely on behavioral proxies rather than causal manipulation of scents, underscoring the need for caution against overinterpreting handshakes as primary pheromone vectors absent broader cross-cultural or longitudinal data.^[54]

Effects on Trust and Cooperation

In controlled experiments involving dyadic negotiations, handshakes exchanged prior to interaction significantly improved joint economic outcomes, with participants achieving approximately 20% higher gains on average compared to no-handshake conditions, as the gesture signaled cooperative intent and reduced deceptive behaviors.^[43] Observers rated handshake-initiating pairs as warmer and more honest, attributing these perceptions to the nonverbal cue's role in priming reciprocity, independent of prior familiarity between participants.^[55] This causal effect persisted across multiple negotiation scenarios, including buyer-seller and roommate disputes, demonstrating handshakes' utility in fostering equitable agreements through enhanced rapport.^[56] From a neuroscientific perspective, the physical synchrony and touch in handshakes activate brain reward centers while promoting endogenous oxytocin release, a neuropeptide that buffers cortisol-driven stress responses and amplifies perceptions of trustworthiness in experimental paradigms measuring hormonal and behavioral markers post-contact.^[57] Functional imaging and endocrine assays in touch-based studies confirm this mechanism, where oxytocin elevation correlates with increased prosocial decisions, underscoring a biological basis for handshakes' trust-enhancing effects beyond mere social convention.^[58] Such findings from randomized trials isolate the gesture's causal influence, countering confounds like verbal priming alone. Where handshakes are culturally normative, including international business and diplomatic settings, they consistently outperform touch-averse alternatives like verbal greetings or nods in building interpersonal bonds necessary for sustained cooperation, as evidenced by lower defection rates in repeated interaction games following handshake protocols.^[45] Non-contact substitutes, tested in parallel conditions, yielded diminished oxytocin-mediated bonding and negotiation yields, highlighting handshakes' superior efficacy for genuine relational investment over perfunctory alternatives.^[43] These patterns hold in diverse professional contexts, prioritizing empirical signaling of intent over symbolic gestures lacking tactile reinforcement.^[59] ![Bill Clinton, Yitzhak Rabin, and Yasser Arafat shaking hands at the White House on September 13, 1993][center]

Grip Strength Correlations

Grip strength, often informally assessed through the firmness of a handshake, serves as a reliable biomarker for overall muscular function and health outcomes. Longitudinal studies have consistently demonstrated that lower grip strength predicts elevated all-cause mortality risk, with a 2023 analysis of U.S. National Health and Nutrition Examination Survey data showing a 5.8% reduction in mortality probability per kilogram increase in grip strength after adjusting for confounders such as age, sex, and comorbidities.^[60] Similarly, a 2023 cohort study reported that individuals with low handgrip strength faced a significantly higher risk of cardiovascular disease (CVD) mortality, independent of gender, underscoring its prognostic value beyond traditional risk factors like blood pressure.^[61] This correlation extends to grip strength's role as a proxy for total body muscle mass and physical fitness, validated through standardized dynamometer measurements in large population surveys. For instance, grip strength exhibits moderate to strong positive associations with appendicular lean mass, a key indicator of skeletal muscle quantity, as evidenced in analyses of over 10,000 adults where higher grip values aligned with greater overall musculoskeletal capacity.^[62] In clinical and epidemiological contexts, such as the UK Biobank cohort, dynamometer-tested grip strength has been employed to gauge frailty and functional reserve, revealing that values below population norms (e.g., <27 kg for men, <16 kg for women) correlate with diminished aerobic capacity and metabolic health.^[63] The implications for handshake assessments highlight physical resilience as a tangible signal of vitality, often overlooked in evaluations prioritizing cognitive or verbal indicators. Empirical data challenge assumptions minimizing bodily strength's relevance, as firm grips—mirroring dynamometer results—forecast lower incidence of adverse events like hospitalization and disability in aging populations.^[64] This positions handshake firmness as a non-invasive, real-time metric for inferring systemic robustness, supported by its inverse relationship to multimorbidity indices in community-dwelling adults.^[65]

Health and Hygiene Considerations

Pathogen Transmission Evidence

A 2014 peer-reviewed study conducted at Aberystwyth University experimentally quantified bacterial transfer during greetings, finding that a standard handshake transmitted a mean of 1.24 × 10^8 colony-forming units (CFU) of Escherichia coli from a gloved donor hand to a recipient, nearly twice the amount transferred via high-five (mean 6.8 × 10^7 CFU) and over ten times more than via fist bump (mean 1.6 × 10^6 CFU).^[66] ^[67] The higher transfer in handshakes was attributed to greater contact surface area (approximately 5 cm² versus 0.5 cm² for fist bumps), longer duration (typically 2-3 seconds versus under 1 second), and applied pressure, which enhance microbial adhesion and dislodgement from skin or surfaces. In healthcare environments, handshake alternatives have shown potential to curb pathogen spread. The same experimental framework demonstrated that fist bumps could reduce bacterial transmission between providers by up to 90% relative to handshakes, prompting recommendations for their adoption in clinical settings to supplement standard hand hygiene protocols.^[68] ^[69] While direct longitudinal data on handshake bans are limited, broader reductions in hand-contact practices align with observed declines in nosocomial infections; for instance, enhanced hand hygiene compliance (including minimized non-essential contacts) has been associated with 40-60% drops in MRSA acquisition rates across multiple hospital studies.^[70] ^[71] Handshakes contribute to fomite-mediated transmission of respiratory and enteric pathogens, as hands frequently harbor fecal bacteria and viruses post-contact, with brief skin-to-skin exchanges enabling viable transfer if hygiene lapses occur.^[72] ^[73] However, empirical evidence indicates this risk is context-dependent and not dominant in outbreaks; historical plagues like the 14th-century Black Death, amid routine interpersonal contacts including handshakes, were driven primarily by Yersinia pestis vector transmission via fleas rather than direct hand-to-hand spread, with mortality rates of 30-60% tied to sanitation failures and rodent reservoirs over greeting rituals.^[8]

Empirical Benefits of Contact

Empirical research demonstrates that handshakes, functioning as brief supportive touch, mitigate physiological stress responses. In a controlled experiment, participants who engaged in a handshake before a psychosocial stressor exhibited significantly lower cortisol levels than those in a no-handshake control condition, indicating a direct dampening effect on the hypothalamic-pituitary-adrenal axis.^[74] Broader analyses of supportive touch, including handshakes, link such contact to reduced anxiety, lowered blood pressure, and bolstered immune responses, as evidenced in cross-cultural studies spanning 112 countries.^[75] Handshakes facilitate social bonding by conveying cooperative signals that enhance trust and interpersonal synchrony. Experimental evidence shows that initiating negotiations with a handshake increases the likelihood of mutually beneficial agreements by approximately 20% compared to no-touch conditions, attributable to heightened perceptions of reliability and reduced defensiveness.^[43] This mechanism draws on humans' evolved sensitivity to tactile cues for affirming alliances, where physical contact subliminally exchanges chemosignals that modulate threat detection and promote reciprocity, akin to grooming behaviors in primates.^[51] Physiological benefits extend to improved pain tolerance, with supportive touch altering nociceptive processing to elevate thresholds during discomfort.^[75] Over time, habitual handshake greetings reinforce denser social networks, as repeated cooperative initiations yield sustained relational investments and higher social capital, verifiable through longitudinal observations of touch-mediated reciprocity in professional and communal settings.^[43]

Comparative Risk Assessments

Handshakes enable direct interpersonal transfer of bacteria and viruses, with studies quantifying mean bacterial loads of approximately 1.24 × 10^8 colony-forming units (CFU) during a typical exchange.^[67] Comparative analyses reveal this transmission is lower than persistent contamination on high-touch surfaces; for example, currency notes frequently harbor pathogens like Staphylococcus aureus, Escherichia coli, and fecal coliforms, with bacterial survival rates on paper bills exceeding those on polymer variants for species such as Salmonella enterica and Listeria monocytogenes over 72 hours.^[76] ^[77] Doorknobs similarly facilitate bacterial transfer rates comparable to or exceeding direct hand contact, as evidenced by equivalent pathogen dissemination from knobs to secondary surfaces in controlled experiments.^[78] Historical epidemics, including the 1918 influenza pandemic that killed tens of millions globally, occurred amid routine handshaking without vaccines or modern sanitation, yet primary transmission vectors were airborne and fomites like respiratory droplets rather than manual greetings, permitting societal persistence of the practice.^[79] ^[80] Relative to alternatives, fist bumps reduce bacterial transfer by about 90% compared to handshakes, transmitting roughly one-tenth the E. coli load of a moderate grip, while high-fives halve the amount; elbow bumps further limit methicillin-resistant Staphylococcus aureus (MRSA) colony transfer relative to fist bumps, though neither eliminates risk entirely due to skin contact.00659-2/fulltext) ^[81] ^[82] Handwashing with soap and water for at least 20 seconds eliminates most transient pathogens, reducing diarrheal disease incidence by 30% and respiratory infections by 20% in community settings, while averting up to 50% of healthcare-associated infections through consistent application.^[83] ^[84] This efficacy supports risk neutralization post-contact without forgoing handshakes, as antimicrobial agents and proper technique outperform waterless alternatives in bacterial log reduction across multiple trials.^[85]

Contemporary Challenges and Adaptations

Post-Pandemic Shifts

During the initial phases of the COVID-19 pandemic, handshake usage declined sharply due to public health mandates and social distancing guidelines implemented globally from March 2020 onward, with many organizations prohibiting physical contact to mitigate viral transmission.^[86] By mid-2022, as vaccination rates rose and restrictions eased, empirical observations and surveys indicated a resurgence, particularly in professional settings where the gesture facilitates trust-building.^[79] For instance, business etiquette analyses in 2023 noted handshakes returning as a norm in vaccinated environments, with leaders advised to reintegrate them for first impressions backed by neuroscience on interpersonal connection.^[87] This trend accelerated into 2025, where job interview protocols explicitly affirmed the handshake's revival, reflecting its enduring social utility over sustained avoidance.^[88] Regional differences emerged in recovery patterns, with U.S. business contexts showing faster rebound driven by emphasis on in-person networking and economic pressures favoring direct interactions. Pre-pandemic surveys recalled 51% of Americans routinely shaking hands, and post-2022 reports highlighted their return in corporate America despite residual caution.^[89] In Europe, recovery appeared slower per early post-lockdown studies, such as a 2020 analysis across Germany, France, and the UK documenting drastic initial drops followed by partial restoration, potentially influenced by prolonged hybrid work models and cultural preferences for alternatives like cheek-kissing where applicable.^[90] By 2024-2025, however, even European professional surveys implied normalization in vaccinated groups, underscoring causal drivers like innate human needs for tactile rapport outweighing lingering hygiene concerns.^[91] The pandemic's impact proved temporary, akin to prior outbreaks including HIV/AIDS in the 1980s, where public fears of casual transmission via touch prompted stigma but failed to eradicate the practice—evidenced by high-profile gestures like Princess Diana's ungloved handshakes with patients in 1987, which reinforced its persistence through empirical debunking of risks.^[79] Causal realism supports this resilience: handshakes' evolutionary role in signaling cooperation and assessing intent via grip strength provides adaptive value that hygiene protocols alone cannot supplant long-term, as vaccination and endemic status shifted risk perceptions without altering fundamental social imperatives.^[92] Data from 2023 onward confirms no permanent decline, with the gesture outlasting even expert predictions of its obsolescence.^[79]

Alternatives and Their Limitations

Fist bumps and elbow taps, often advocated as lower-contact substitutes, demonstrate reduced bacterial transfer compared to handshakes but fall short in evoking equivalent levels of cooperative intent. Experimental research on negotiation dynamics reveals that initiating interactions with a full handshake, versus no physical greeting, significantly enhances joint outcomes and openness; for instance, in paired integrative bargaining tasks, handshaking groups achieved average joint gains of 0.13 utility points higher than non-handshaking counterparts (p = .04), with increased interest disclosure (M = 2.23 vs. 0.97, p < .01) and reduced deceptive claims (M = 0.48 vs. 1.03, p = .03).^[93] These effects stem from the handshake's role in signaling vulnerability and reciprocity, qualities diminished in briefer, less enveloping alternatives like fist bumps, which lack comparable empirical validation for boosting defection-averse behavior in economic games (where handshakes lowered defection to 50.8% from 67.5%, p = .045).^[93] Virtual greetings, such as waves over video or non-contact namastes, further limit bonding efficacy, as physical proximity and touch underpin superior trust formation over mediated formats. Studies contrasting communication modalities in trust-building tasks, like social dilemma games, find face-to-face encounters—facilitated by tactile greetings—yield higher cooperation rates than video (with trust mediated by perceived eye contact and presence) or audio/text conditions, where defection risks escalate due to reduced nonverbal cues.^[94] In-person teams also generate 15-20% more creative ideas than virtual ones, attributing the gap to tactile and spatial dynamics absent in remote introductions.^[95] Broader touch research corroborates that even incidental physical contact fosters rapport and reduces interpersonal suspicion more effectively than verbal or gestural proxies alone.^[96] The handshake's enduring prevalence in high-stakes contexts, despite alternatives' hygiene appeals, reflects these evidential constraints on "sanitized" options for authentic rapport. While post-2020 adaptations temporarily elevated fist bumps and nods, professional surveys indicate reversion toward handshakes for signaling mutual commitment, as partial substitutes fail to convey the full spectrum of olfactory and haptic cues linked to intraspecies affiliation.^[50] This resilience highlights causal trade-offs: minimizing contact preserves immediacy but erodes the gesture's evolved function in priming collaborative mindsets.

Debates on Tradition vs. Caution

The handshake, as a longstanding gesture of mutual respect and direct interpersonal engagement, has faced scrutiny in debates pitting cultural tradition against heightened hygiene caution, particularly in professional and social contexts where physical contact signifies commitment and authenticity. Advocates for tradition argue that the handshake embodies unmediated human connection, fostering perceptions of trustworthiness and competence; a 2000 study by the American Psychological Association found that a firm handshake creates a positive first impression, influencing judgments of extraversion and openness for both men and women.^[97] This directness is seen as essential for building rapport in negotiations and alliances, with research indicating handshakes enhance relational formality and balance power dynamics more effectively than verbal cues alone.^[98] Critics of precautionary alternatives, such as fist bumps or no-contact nods, contend that substituting tradition with "germaphobic" gestures diminishes social capital by weakening the tactile reinforcement of agreements and hierarchies. Physical touch, including handshakes, releases endorphins that bolster mood and interpersonal bonds, and widespread avoidance risks broader societal detachment, as evidenced by observations of declining casual contact correlating with reduced emotional resilience.^[99] Such shifts are critiqued as overreactions amplified by institutional emphases on risk aversion, potentially eroding the handshake's role in signaling masculinity and resolve—qualities tied to firm grips perceived as indicators of confidence and leadership.^[100] Hygiene-focused perspectives highlight handshakes' potential for bacterial transfer, with a 2014 study showing they transmit roughly ten times more microbes than fist bumps due to greater skin contact area and duration.^[101] However, empirical assessments reveal the absolute risk remains low; a 2011 analysis concluded that a single handshake poses only a minimal probability of conveying harmful pathogens, especially absent poor handwashing compliance elsewhere.^[102] These findings underscore that while cautionary measures like sanitization mitigate concerns, outright rejection of handshakes overlooks their net benefits in trust formation, which outweigh incremental transmission hazards in non-clinical settings. A data-driven resolution favors retaining the handshake with basic hygiene protocols, rejecting unsubstantiated normalization of touch aversion as empirically unwarranted and culturally corrosive. Mainstream advocacy for alternatives often stems from precautionary biases in health messaging, yet causal evidence prioritizes the gesture's role in human cooperation over exaggerated peril, affirming its value for direct, embodied interactions.^[103]

Notable Records and Instances

Endurance Records

The longest verified continuous handshake duration stands at 33 hours and 3 minutes, achieved by Alastair Galpin and Don Purdon of New Zealand alongside Rohit Timilsina and Santosh Timilsina of Nepal on January 28–29, 2011, in Christchurch, New Zealand.^[104] This record involved maintaining a continuous shaking motion with unbroken grip, highlighting extreme muscular endurance in the forearms and hands amid fatigue and sleep deprivation.^[105] Prior records included 15 hours, 30 minutes, and 45 seconds set by Matthew Rosen and Joe Ackerman in Waco, Texas, in 2009, surpassing earlier marks such as 9 hours and 19 minutes by Alastair Galpin's team in 2006.^[105]^[106] These feats demand rigorous preparation, including grip training, hydration protocols, and medical oversight to monitor for circulatory issues and muscle strain from sustained isometric contraction. In the category of marathon shaking hands, Claes Blixt and Dennis Oscarsson of Sweden established a record of 27 hours on April 22–23, 2023, in Uddebo, Sweden, requiring perpetual hand motion without release.^[107] Team-based endurance variants, such as paired relays, have seen attempts like the 43 hours and 35 minutes by Matt Holmes and Juan Diaz de Leon in 2016, though official Guinness certification remains pending for exceeding prior benchmarks.^[108] Such records underscore the physiological boundaries of grip sustainability, with participants experiencing progressive loss of dexterity due to lactic acid buildup and nerve compression.

Symbolic or Mass Events

One emblematic instance of the handshake as a symbol of collective unity occurred on September 13, 1993, when Israeli Prime Minister Yitzhak Rabin and Palestine Liberation Organization Chairman Yasser Arafat clasped hands on the White House lawn in the presence of U.S. President Bill Clinton, formalizing the Oslo Accords. This gesture, broadcast worldwide, represented a tentative step toward Israeli-Palestinian reconciliation after decades of conflict, momentarily elevating public morale and international hopes for a two-state solution despite subsequent violence undermining the accords.^[109]^[110] Similarly, on February 21, 1972, U.S. President Richard Nixon shook hands with Chinese Communist Party Chairman Mao Zedong during Nixon's groundbreaking visit to Beijing, the first by a sitting American president, signaling the end of decades of hostility and paving the way for diplomatic normalization between the two nations in 1979. The event, captured in photographs and lauded in contemporary media, boosted perceptions of global détente and encouraged cross-cultural exchanges, though underlying ideological tensions persisted. In mass settings, handshakes have underscored communal solidarity, as in the January 29, 2020, event in Abu Dhabi where 1,817 participants formed the longest handshake relay chain, certified by Guinness World Records under the theme "One World, One Message" to promote tolerance and unity across diverse groups. Organized by Abu Dhabi Police, the chain symbolized coexistence in the UAE's multicultural society, with media coverage highlighting its role in fostering social cohesion amid regional challenges.^[111] Another large-scale effort involved 3,434 participants from the Hong Kong Blind Sports Federation in a 2019 handshake chain, setting a Guinness record for length and emphasizing inclusion for the visually impaired, which garnered positive press for advancing disability awareness and collective empathy.^[112]

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On funerary steles (Ancient Greek grave markers) the handshake probably represented the final goodbye between the deceased and a loved one. The oldest ...
[13]
The History of the Handshake
Aug 9, 2016 · One popular theory is that the gesture began as a way of conveying peaceful intentions. By extending their empty right hands, strangers ...
[14]
Did ancient Romans shake their hands? - IMPERIUM ROMANUM
Jul 27, 2018 · Ancient Romans used "dextrarum iunctio" (right hand) for ceremonial purposes, not in every situation, and not as a typical masculine greeting.
[15]
Shaking hands: How the ancient Greeks revolutionized the way ...
Apr 7, 2023 · The handshake has also been historically associated with chivalry and courtesy, especially during the Middle Ages. Knights would offer their ...
[16]
When Did Shaking Hands Become a Standard Way of Greeting ...
Apr 11, 2020 · According to Roodenburg, handshaking survived in a few niches, like in Dutch towns where they'd use the gesture to reconcile after disagreements ...
[17]
the social spread of the handshake in urbanizing Britain, 1700–1850
May 30, 2024 · Yet, the Quakers did confidently use this form of greeting with all comers – and greatly popularized its use.
[18]
[PDF] the social spread of the handshake in urbanizing Britain, 1700–1850
The handshake spread in Britain (1700-1850) via mercantile and Quaker networks, becoming widely diffused and acquiring egalitarian meanings through social ...
[19]
The Etiquette of the Victorian Handshake: Advice on Opposite Sex ...
Sep 5, 2017 · The handshake was governed by strict rules of etiquette, especially when that handshake was shared by members of the opposite sex.Missing: standardization | Show results with:standardization
[20]
Human history: A socio-cultural examination of handshaking
Aug 19, 2024 · The custom had a long back history. It was regularly used by diplomats when two royal representatives met, and neither would kowtow to the ...
[21]
American - Greetings - Cultural Atlas
Jan 1, 2020 · Handshakes should be firm and accompanied with direct eye contact throughout the greeting, especially in business contexts. Being the first ...
[22]
History of the Handshake - Henry A. Davidsen
Humans have shaken hands for thousands of years, dating back to 5th-century BCE Greece. It was a way to communicate peacefulness.Handshakes & Body Language · Modern Handshaking & Other... · Giving A Proper Handshake
[23]
Consider it Culture: What's in a Handshake?
This gesture is believed to be a sign of peace, proof that one is not bearing weapons and extending a hand toward each other, showing further trust.
[24]
The International Nuances of Handshaking - PSOW
Nov 12, 2019 · The custom has many stories of its origin, but many believe the history of the handshake dates back to 5th century BC Greece as a symbol of ...
[25]
[PDF] Handshaking, Gender, Personality, and First Impressions
We expected that women's handshakes would be less strong, less vigorous, have a less com- plete grip, and be of shorter duration then men's handshakes.Missing: Western adaptations persistence
[26]
Study: Handshaking viewed more positively by Westerners than by ...
Jul 5, 2017 · The team found that, compared with East Asians, Western participants had more positive evaluations of social interactions involving handshakes.
[27]
Is the Preference for Handshaking Just a Western Thing? - VOA
When viewed by gender, Western women rated all interactions with handshakes more positively than those occurring without one. Western men rated female hosts ...Missing: adaptations persistence
[28]
Handshake Deals - Farmland Access Legal Toolkit
Finally, in most circumstances, handshake deals cannot create a legally enforceable lease. If the relationship sours, for example, farmers without a written ...
[29]
Mind Your Farm Business, Ep. 102 — The legalities of handshakes ...
Jan 16, 2025 · However, in rural communities, many deals are still made through a verbal agreement and handshake. In this episode of Mind Your Farm ...
[30]
The Contract Law Harvest - Farm Office - The Ohio State University
Feb 29, 2024 · ... enforceable. Handshake Agreements Can Be a Double-Edged Sword. In this case we are introduced to two brothers (the “Plaintiffs”), who were ...
[31]
Handshake Deals vs. Written Agreements in Ag - Agri-Access
Mar 11, 2025 · Understand the risks and benefits of handshake deals compared to formal written agreements in agriculture, and how clear contracts can ...
[32]
[PDF] arab customs and culture - Community College Outreach
Arabs shake hands using only the right hand when they meet and say goodbye. Sometimes failure to shake hands might be considered rude, especially among older.
[33]
[PDF] Understanding Islamic Etiquette
If shaking a hand, it is common for the hand to be limp non aggressive ... The right hand is the clean hand used for eating, shaking hands etc. Page 23 ...Missing: hygiene ethnographic studies
[34]
Ethnography – Navigating Shaking Hands on the Arabian Peninsula
Mar 15, 2025 · In the Middle East, the basic premise is that women shake hands or kiss cheeks with women and men shake hands, kiss cheeks or bump noses with ...Missing: customs preference hygiene
[35]
The Origin, Meaning, and Global Spread of the Handshake - LinkedIn
Aug 24, 2025 · It became the default gesture in diplomacy, trade, and professional life, often replacing or supplementing indigenous greetings.
[36]
Translating the Handshake Across Cultures - Cudoo
Sep 11, 2017 · African countries have their own variations on the traditional handshake. A handshake should be firm and is often prolonged. In Namibia, thumbs ...Missing: verbal formulas
[37]
[PDF] Cultural Norms of Greetings in the African Context - ojs tnkul
Greetings in Africa are conversational routines with patterns varying by context, relationship, status, gender, age, and may include handshakes or hand-kisses.<|separator|>
[38]
Do and Don'ts in China — A Guide to Chinese Etiquette
Handshakes as greetings in China are as common as they are in the West. Do greet others by using a handshake or a nod. Bows are best saved for your visit to ...
[39]
Greetings in China: Handshakes, Bows, and What NOT to Do
Apr 9, 2025 · 1. Handshakes: The Most Common Greeting · Keep the handshake light (not too strong). · A gentle nod or smile makes it friendlier.
[40]
Bow, shake hands or poke someone in the eye?
Jun 21, 2020 · Most Japanese people, when meeting with a foreign person, will expect to shake hands. I usually advise that a slight nod of the head or bend at ...
[41]
Business Etiquette & Common Practices in South Korea
Korean bows are not as pronounced as in other countries like Japan, but the younger or more junior party should always bow deeper. When shaking hands, you can ...
[42]
Should I shake hands or bow when in a Japanese business ...
Jan 15, 2025 · When it comes to the question of whether to shake hands or bow in a business setting, the answer is not always straightforward - especially ...
[43]
Handshaking promotes deal-making by signaling cooperative intent
In Studies 1a and 1b, pairs who chose to shake hands at the onset of integrative negotiations obtained better joint outcomes.
[44]
[PDF] Handshaking Promotes Deal-Making by Signaling Cooperative Intent
The handshake is considered a “greeting ritual” because it is commonly used at the start of social interactions and satisfies the two defining features of ...
[45]
For Better Negotiations, Start with a Handshake - Chicago Booth
Dec 27, 2018 · Participant pairs who shook hands had higher negotiation scores, according to the study. When their recorded behavior was rated by observers, ...
[46]
Exploring the handshake in employment interviews - PubMed
Exploratory analysis suggested that the relationship between a firm handshake and interview ratings may be stronger for women than for men.Missing: reliability | Show results with:reliability
[47]
Exploring the Handshake in Employment Interviews - ResearchGate
Oct 9, 2025 · Exploratory analysis suggested that the relationship between a firm handshake and interview ratings may be stronger for women than for men.
[48]
Why did Mao Shake Hands with Nixon? Good Americans, Bad ...
Feb 21, 2022 · Mao's handshake with Nixon, therefore, did not take place in a historical vacuum. In Beijing's logic, the handshake was a victory, not a defeat.
[49]
Geneva summit stirs memories of 1985 Reagan-Gorbachev meet
Jun 16, 2021 · Six years before the eventual collapse of the Soviet Union, the 1985 Geneva summit focused on de-escalating the nuclear arms race between the ...<|control11|><|separator|>
[50]
A social chemosignaling function for human handshaking - eLife
Mar 3, 2015 · We found that humans often sniff their own hands, and selectively increase this behavior after handshake.
[51]
A social chemosignaling function for human handshaking - PMC - NIH
Mar 3, 2015 · Handshaking may functionally serve active yet subliminal social chemosignaling, which likely plays a large role in ongoing human behavior.
[52]
Past, Present, and Future of Human Chemical Communication ...
This article aims to (a) introduce research on human chemical communication in the historical context of the behavioral sciences;
[53]
People use handshakes to sniff each other out | ScienceDaily
Limp or firm, your handshake conveys subliminal social cues. Now, research reveals it also transmits chemical signals that could explain why ...
[54]
The truth behind handshake-sniffing may bum you out - Phys.org
Mar 9, 2015 · So handshakes transfer smelly compounds. And how often we smell our hands following a handshake depends on who we greet. By secretly filming ...Missing: pheromone | Show results with:pheromone
[55]
Handshaking Promotes Deal-Making by Signaling Cooperative Intent
A handshake is viewed as a signal of cooperative intent, increasing people's cooperative behavior and affecting deal-making outcomes.
[56]
A fair shake: Study finds handshaking promotes better deal-making
Jul 30, 2018 · Once again, those who shook hands reached greater agreement and scored more points. Moreover, the researchers videotaped the exchange, and ...
[57]
Handshake or Hug? Why We Touch - Psychology Today
Oct 5, 2008 · So, hugs or handshakes? Either one, along with a display of trust, is likely to cause oxytocin release and increase the chances that this person ...
[58]
The Handshake - Brain Connection - Neuroscience Marketing
If the stranger is a good match for other trustworthy people, the brain releases oxytocin, telling us it is safe to trust. At the same time, oxytocin causes the ...
[59]
Shaky Business: How Handshakes Win Negotiations - Baker Library
Oct 15, 2018 · They found that when negotiators shook hands beforehand, they came to a more cooperative agreement—both sides getting more of what they wanted.
[60]
Association of grip strength and comorbidities with all-cause ...
Jun 27, 2023 · Grip strength was inversely correlated with all-cause mortality, with a 5.8% reduction in the probability (p < 0.0001) of mortality risk for ...Abstract · Introduction · Materials and methods · Discussion
[61]
The association of handgrip strength with all-cause and ... - Frontiers
Sep 14, 2023 · Conclusion: Adults with low HGS exhibited a significantly increased risk of both all-cause and CVD mortality, regardless of gender. Additionally ...
[62]
Handgrip Strength and Muscle Quality: Results from the National ...
Apr 28, 2023 · The ALM, a well-recognized proxy for skeletal muscle mass [14], was calculated by summing the lean mass (excluding bone mineral content) of the ...
[63]
prospective cohort study of half a million UK Biobank participants
May 8, 2018 · Higher grip strength was associated with a range of health outcomes and improved prediction of an office based risk score.Missing: Queen Mary
[64]
Hand grip strength as a proposed new vital sign of health
Jan 9, 2024 · Studies have shown that individuals with low HGS are at a higher risk of disability, hospitalization, and mortality. Incorporating HGS into ...
[65]
Handgrip strength is associated with mortality in community-dwelling ...
Nov 8, 2023 · Conclusion. Poor hand grip strength is an independent risk factor for mid-term mortality among community-dwelling older individuals in Yilan.<|separator|>
[66]
The Fist Bump: A More Hygienic Alternative to the Handshake
Adoption of the fist bump as a greeting could substantially reduce the transmission of infectious disease between individuals. Keywords: Bacteria; Greeting; ...
[67]
The fist bump: A more hygienic alternative to the handshake
Nearly twice as many bacteria were transferred during a handshake (mean 1.24 × 108 CFU) compared with a high five, whereas the fist bump consistently gave the ...
[68]
Reducing pathogen transmission in a hospital setting. Handshake ...
We have determined that implementing the fist bump in the healthcare setting may further reduce bacterial transmission between healthcare providers.
[69]
Fistbumps, not handshakes, to prevent infections - Today's Hospitalist
The study, which was published in the December 2013 Journal of Hospital Infection, found that not only did fistbumps minimize contact time.
[70]
The effect of improved hand hygiene on nosocomial MRSA control
Nov 26, 2014 · Many studies have been published confirming the link between improved hand hygiene compliance and reduction in MRSA acquisition and infections.
[71]
The effect of improved hand hygiene on nosocomial MRSA control
Nov 26, 2014 · Many studies have been published confirming the link between improved hand hygiene compliance and reduction in MRSA acquisition and infections.
[72]
Hands Are Frequently Contaminated with Fecal Bacteria and Enteric ...
Feb 13, 2023 · Hands act as intermediaries in enteric pathogen transmission, transferring enteric pathogens between people and the environment through contact ...
[73]
What's in a Handshake? Exploring the Best Form of Greeting to ...
Nov 2, 2020 · Background: Respiratory and enteric viruses are highly contagious pathogens that can be spread by contaminated hands and surfaces.
[74]
The Effect of A Handshake on Psychosocial Stress
Results revealed significant differences in cortisol between conditions such that a handshake significantly reduced cortisol in the stress handshake condition ...
[75]
Handshakes and hugs: why the science of touch is essential to our ...
Mar 30, 2023 · Research has shown that sharing supportive touch can buffer against stress and anxiety, reduce pain, lower blood pressure, and even boost our immune system.
[76]
Dirty Money | Scientific American
Jan 3, 2017 · Fecal bacteria and other pathogens may have hitched a ride from someone's hands, nose or apron onto our cash. And yeast or mold might have ...
[77]
Bacterial survival rate on different banknotes-Comparison of 12 h ...
For polymer-based banknotes, we observed a lower rate of bacterial survival, especially for Salmonella enterica, Listeria monocytogenes and Enterococcus sp.
[78]
Biometric sensors no dirtier than doorknobs, study finds
Oct 10, 2007 · Researchers found that the transfer of bacteria from the doorknob to another surface was nearly identical to that of the biometric devices.
[79]
COVID Couldn't Kill the Handshake - The Atlantic
Jan 18, 2023 · The gesture has survived plenty of outbreaks before COVID, and it will almost certainly outlast more to come.
[80]
“The Most Terrifying Experience”: The U.S. Navy and the Pandemic ...
Jun 24, 2024 · [58] The pandemic of 1918 was one of the worst diseases in history, but for American military leaders on land and sea, it was a secondary enemy.
[81]
Fist Bumps Pass Along Fewer Germs Than Handshakes - NPR
Jul 29, 2014 · A moderately strong handshake transferred more than five times as much Escherichia coli bacteria onto a recipient's hand than a fist bump, ...Missing: studies | Show results with:studies
[82]
Fist and elbow bump greetings frequently result in transfer of MRSA
Oct 23, 2021 · Fist bump and elbow bump greetings both resulted in the frequent transfer of MRSA from colonized patients, although significantly more MRSA colonies were ...
[83]
Handwashing Facts | Clean Hands - CDC
Apr 17, 2024 · Handwashing can prevent about 30% of diarrhea-related sicknesses and about 20% of respiratory infections (e.g., colds).
[84]
Key facts and figures - World Health Organization (WHO)
Appropriate hand hygiene prevents up to 50% of avoidable infections acquired during health care delivery, including those affecting the health work force. The ...
[85]
Comparative efficacy of hand hygiene agents in the reduction of ...
Antimicrobial handwashing agents were the most efficacious in bacterial removal, whereas waterless agents showed variable efficacy.Missing: statistics | Show results with:statistics
[86]
COVID-19 Killed the Handshake. What Will Replace It? | TIME
May 27, 2020 · Experts are betting that some degree of social touch will disappear permanently, even after the pandemic ends.
[87]
Handshake Tips For Leaders Who've Been Out Of Touch - Forbes
A firm, friendly handshake has long been recommended in the business world to make a good first impression, and neuroscience research from Beckman Institute ...
[88]
Interview Etiquette in 2025: Is the Handshake Back? · Carrington ...
In 2025, the handshake is largely back. You should feel confident offering one at interview. Just remember, as always, to be respectful of others and adaptable ...Missing: trends 2023 2024 resurgence
[89]
It's not just you—the world is beginning to rethink the handshake
Feb 9, 2022 · Will physical gestures such as hugs, handshakes, and high fives return to our repertoire of greetings? Or will more socially distanced salutations prevail?Missing: trends 2023 resurgence
[90]
[PDF] Kisses, Handshakes, COVID-19 – Will the Pandemic Change Us ...
Nov 18, 2020 · We find that after the use of handshakes and social kissing as forms of greeting decreased drastically, they became common again already a ...
[91]
Greetings in a Post-Pandemic Environment
Oct 10, 2023 · As COVID-19 has moved from a pandemic to an endemic disease, should we greet each other with a shake of hands, fist bump, or just eye contact ...
[92]
Handshakes have returned, like many pre-pandemic norms, but with ...
Jul 17, 2022 · Handshakes have returned, like many pre-pandemic norms, but with a COVID note of caution ... After a long hiatus of virtual meetings, business ...
[93]
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Summary of each segment:
[94]
[PDF] Being there versus seeing there: Trust via video - CollabLab
We studied the emergence of trust in a social dilemma game in four different communication situations: face-to- face, video, audio, and text chat.
[95]
Thinking Inside the Box: Why Virtual Meetings Generate Fewer Ideas
Overall, the in-person teams generated between 15% and 20% more ideas than those that met over video. The in-person participants also observed more and ...Missing: cooperation | Show results with:cooperation
[96]
Hands On Research: The Science of Touch
Sep 29, 2010 · There are studies showing that touch signals safety and trust, it soothes. Basic warm touch calms cardiovascular stress. It activates the body's ...
[97]
Your handshake may provide more information to others than you ...
Jul 9, 2000 · A new study backs up what the etiquette books have been saying all along, that a firm handshake helps makes a good first impression for both males and females.
[98]
What Your Handshake Communicates About Trust, Power, and ...
Jul 29, 2025 · It sets the tone for an interaction, shapes the perception of trust, and signals intention and status. Especially in professional contexts, the ...
[99]
The surprising ways little social interactions affect your health
Aug 12, 2020 · The surprising ways little social interactions affect your health · The subtle ways we share touch in person can release mood-boosting endorphins.
[100]
The Power of a Handshake - Belmont University Blogs
Jan 24, 2020 · The results concluded that the firmer a handshake is, the more social and confident a person is perceived. Firm, but not crushing ...<|control11|><|separator|>
[101]
Fist bump better than handshake for cleanliness - Harvard Health
Jul 29, 2014 · Shaking hands transmitted 2 times more bacteria than high fives, and 10 times more bacteria than bumping fists. Their results are published in ...Missing: scientific studies transfer
[102]
Handshakes unlikely to spread harmful bacteria: study | Safety+Health
May 25, 2011 · “A single handshake offers only a small risk of acquiring harmful bacteria,” said lead author David Bishai. “Our study indicates when shaking ...
[103]
Are you serious? From fist bumping to hand hygiene - PubMed Central
Hand shaking and hand hygiene should be considered complex interventions taking account of behaviour at the individual and social level as well as contextual ...
[104]
Guinness World Records - The longest handshake was 33 hr 3 min ...
Jun 21, 2011 · The longest handshake was 33 hr 3 min, and was achieved by Alastair Galpin and Don Purdon (both New Zealand) and Rohit Timilsina and Santosh ...Missing: endurance | Show results with:endurance
[105]
Longest Handshake - Submit a world record
He and a college friend shook hands for 10 hours, 10 minutes, 10 seconds. Geoffrey Beattie, a professor of psychological sciences at the University of ...
[106]
Longest handshake (shared): 9 hours 19 minutes - Alastair Galpin
Guinness World Record™ for Longest handshake (shared): 9 hours 19 minutes - achieved in 2006.Missing: Al Banker Purvis
[107]
Longest marathon shaking hands | Guinness World Records
The longest marathon shaking hands is 27 hours, and was achieved by Claes Blixt and Dennis Oscarsson (both Sweden), in Uddebo, Västra Götaland, Sweden, ...
[108]
Alumnus breaks Guinness World Record | handily | Colorado State ...
Feb 24, 2016 · Diaz de Leon and friend Matt Holmes recently reached for a Guinness World Record for the world's longest handshake.Missing: endurance | Show results with:endurance
[109]
Handshakes that made history: a timeline | Daily Sabah
Apr 27, 2018 · The handshake between the two leaders marked the latest milestone in a rapid rapprochement after months of global fears about a nuclear conflict.
[110]
Other historic handshakes that shook the world | The Straits Times
Apr 27, 2018 · The handshake between the two leaders marked the latest milestone in a rapid rapprochement after months of global fears about a nuclear conflict.Follow Topic · Arafat-Rabin, 1993 · Obama-Castro, 2013
[111]
UAE sets new Guinness record for 'world's longest handshake'
A human chain of 1,817 helped break the record during an event, titled "One World One Message" at Umm Al Emarat Park in Abu Dhabi. The ...<|separator|>
[112]
Longest handshake chain | Guinness World Records
The longest handshake chain involved 3,434 participants and was achieved by the Hong Kong Blind Sports Federation (Hong Kong), in Hong Kong, ...