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Indiana University

A kiss is not a kiss. In some cultures it's just gross, researchers find.

A kiss is not a kiss. In some cultures it's just gross, researchers find.

Science has taught us a lot about a smooch. Researchers have discovered kissing helps you choose the right mate and helps you live longer. They have found you use 146 muscles when you pucker up and swap 80 million new bacteria when you lock lips. And you will spend some 20,000 minutes — or two weeks — of your lifetime doing it. But the cultural significance of a kiss may not be that widely shared, according to new research published in American Anthropologist. Researchers at the University of Nevada and Indiana University found fewer than half of the world's cultures kiss in a romantic way. Although many societies consider kissing to be a romantic or erotic activity,...

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