Why Kissing Is So Pleasurable: New Research

03/11/2009 05:12 am ET | Updated May 25, 2011

The reason that kissing feels so pleasurable is that sparks a surge of hormones in our brains, according to new research.

Couples who share a passionate kiss this Valentine's Day will enjoy sensations of relaxation and excitement because of a complex series of chemical processes, as well as their love for their partners.

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