Tuesday, March 20, 2007

Why Men Sleep After Sex

Through a post at Digg today, I found an interesting site called "Life's Little Mysteries" where one of the latest features deals with sex and sleep. Specifically, why is it that men usually pass out after making love?

It turns out that, during ejaculation, a man's brain releases a bunch of chemicals, including a hormone called prolactin. This stuff is a sleep agent among other things. According to the story, "the release of prolactin is linked to the feeling of sexual satisfaction, and it also mediates the 'recovery time.'" Recovery time refers to the time it takes for men to get aroused again.

Other chemicals released during orgasm like oxytocin and vasopressin also act as sleep agents. The release of these chemicals may serve an evolutionary purpose as they are linked to "pair bonding." This type of bonding keeps parents together after sex, which the article refers to as "favorable" for kids because "cooperative child rearing maximizes the young one’s chances for survival."

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About Me

My photo
I started pound360 to channel my obsession with vitamins, running and the five senses. Eventually, I got bored focusing on all that stuff, so I came back from a one month hiatus in May of 2007 (one year after launching Pound360) and broadened my mumblings here to include all science.