... pairs of heterosexual college students who kissed for 15 minutes while listening to music experienced significant changes in their levels of the chemicals oxytocin, which affects pair bonding, and cortisol, which is associated with stress. Their blood and saliva levels of the chemicals were compared before and after the kiss. Both men and women had a decline in cortisol ... For men, oxytocin levels increased .. while oxytocin levels went down in women ... In a test group that merely held hands, chemical changes were similar, but much less pronounced ...
Kisses unleash chemicals that ease stress levels
http://www.google.com/hostednews/ap/article/ALeqM5hgmRtA0OEszUFMktp2pE4gfX0rswD96ATI980
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