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Message: <blockquote data-quote="sunflowers" data-source="post: 9977289" data-attributes="member: 353373">The Science of Sex<img src="http://www.esquire.com/cm/esquire/images/YD/make-her-feel-sexy-2-083110-lg-59897606.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />                 <img src="http://photos1.meetupstatic.com/photos/event/1/b/1/f/highres_7266943.jpeg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Pecking, smooching, Frenching, and playing tonsil-hockey—there are as  many names for kissing as there are ways to do it. Whether we use it as  an informal greeting or an intensely romantic gesture, kissing is one  of those ingrained human behaviors that seems to defy explanation. Its  many purposes—a blow and peck for good luck on dice, lips to ground  after a rocky boat ride, kisses in the air to an acquaintance, and the  long slow smooches of Hollywood—have different meanings yet are similar  in nature. So why is it that we love to pucker up? A Kiss Isn’t Just a KissPhilematologists, the scientists who study kissing, aren’t exactly sure  why humans started locking lips in the first place. The most likely  theory is that it stems from primate mothers passing along chewed food  to their toothless babies. The lip-to-lip contact may have been passed  on through evolution, not only as a necessary means of survival, but  also as a general way to promote social bonding and as an expression of  love. But something’s obviously happened to kissing since the time of the  chewed-food pass. Now, it’s believed that kissing helps transfer  critical information, rather than just meat bits. The kissing we  associate with romantic courtship may help us to choose a good mate,  send chemical signals, and foster long-term relationships. All of this  is important in evolution’s ultimate goal—successful procreation.  Kissing allows us to get close enough to a mate to assess essential  characteristics about them, none of which we’re consciously processing.  Part of this information exchange is most likely facilitated by <a href="http://www.divinecaroline.com/22077/66307-chemical-communication--effects-pheromones" target="_blank">pheromones</a>,  chemical signals that are passed between animals to help send messages.  We know that animals use pheromones to alert their peers of things like  mating, food sources, and danger, and researchers hypothesize that  pheromones can play a role in human behavior as well. Although the  vomeronasal organs, which are responsible for pheromone detection and  brain function in animals, are thought to be vestigial and inactive in  humans, research indicates we do <a href="http://www.divinecaroline.com/22081/42913-science-sex--nose-know-" target="_blank">communicate with chemicals</a>.</blockquote>

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