8/10/2012 2:01 PM
We all know the old chestnut about men rolling over and falling asleep right after sex. As it turns out, there is a scientific explanation for this common phenomenon.
A French medical group monitored men’s brain activity during and after orgasm to find out what happens in the brain during those events. And, they found that after climax, the men in the study experienced a surge in the chemicals oxytocin and serotonin, both of which make you sleepy.
There were also areas of the brain that saw a drop in activity after orgasm. The scientists observed that the cerebral cortex – that’s the part of your brain associated with conscious thought – shut down after sex. The areas of the brain associated with sexual desire shut down, as well, which explains why it’s sometimes awhile before he’s up for round two.
The researchers were not sure why men’s brains react that way. We are the only animal for whom sex (for males, at least) is followed by an immediate desire for sleep. Even more perplexing, the desire is not mirrored in women. While 80% of men say they can fall asleep right after sex, no problem, only 46% of women said they can fall asleep easily after doing the deed. Many women whose partners fall asleep after the act report feeling a need for more intimacy and attention.
Are you in the group not happy with the above pattern? Consider joining the 34% of folks who prefer to get their jollies first thing in the A-M. YourTango did a survey, and morning was the most popular time for sex. This was followed by evening (26 percent) and late night (24 percent) which are definitely times that the roll over and play dead pattern would be more prevalent. If you decide to continue getting all your action in the late evening, remember ladies: if he falls asleep right after the deed, it’s just his brain chemistry, and he probably cannot help it.