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From the February 2008 Scientific American Mind | 40 comments

Affairs of the Lips: Why We Kiss ( Preview )

Researchers are revealing hidden complexities behind the simple act of kissing, which relays powerful messages to your brain, body and partner

By Chip Walter   

 

Kissing has other primal effects on us as well. Visceral marching orders boost pulse and blood pressure. The pupils dilate, breathing deepens and rational thought retreats, as desire suppresses both prudence and self-consciousness. For their part, the participants are probably too enthralled to care. As poet e. e. cummings once observed: “Kisses are a better fate / than wisdom.”

Litmus Test

Although a kiss may not be wise, it can be pivotal to a relationship. “One dance,” Alex “Hitch” Hitchens says to his client and friend in the 2005 movie Hitch, “one look, one kiss, that’s all we get ... one shot, to make the difference between ‘happily ever after’ and, ‘Oh? He’s just some guy I went to some thing with once.’ ”

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