Why Do Men Fall Asleep After Sex?

Why Do Men Fall Asleep After Sex?
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Why Do Men Fall Asleep After Sex?

For lots of girls, the correlation between and sex and sleeping is one of those irritating facts of life: no matter when passionate intercourse happens, guys always seem to fall asleep soon afterwards.

The author of “Men, Love and Sex: The Complete User Guide For Women,” Dave Zinczenko tried to give a reason to a phenomenon like: guys fall asleep because girls don’t turn into a pizza.

We aren’t sure we are ever going to become a pizza, and we will never be able to foresee to order one beforehand. Thus in lieu of a cure, a better reasoning will have to do. Although girls sometimes can fall asleep after sex, the phenomenon does seem more peculiar for guys. What is it, then, that drives them into the sleepy land?

First of all, the ability of men to fall asleep soon after sex is obviously explained by the fact that sex often happens at night, in a bed, and is, after all, physically exhausting (frequently more so for the guys than the girls, though this certainly differs). So when the intercourse is over, it’s natural for a man to fall asleep.

Secondly, study using positron emission tomography scans has displayed that in order for an individual to reach orgasm, a primary requirement is to let to go of ‘all scare and anxiety.’ Doing so is also relaxing and can give an explanation to the tendency of falling asleep. There is the biochemistry of the orgasm itself. Study displays that during ejaculation, guys produce a mix of brain chemicals, including oxytocin, serotonin, norepinephrine, vasopressin, nitric oxide and prolactin.

The release of prolactin is connected with the feeling of sexual pleasure, and it also mediates the ‘recovery period’ that guys are well known of – the period a man has to wait before “giving it another try.” Researches have also displayed that guys deficient in prolactin have faster recovery periods.

The levels of prolactin are naturally higher during sleeping, and animals injected with the chemical get tired immediately. This shows a strong connection between prolactin and sleeping, so it’s likely that the hormone’s release during orgasm makes guys fall asleep. Prolactin also explains why guys are sleepier after sex than after masturbation. The reasons are unknown, but sex orgasms release 4 times more prolactin than orgasms provided by masturbation, according to a recent research.

Two other chemicals released during orgasm – vasopressin and oxytocin – are also connected with falling asleep. The release of them often accompanies that of melatonin, the primary hormone that regulates our body clocks. Oxytocin is also known to reduce the levels of stress, which again can bring to relaxation and sleepiness.

If to speak about the evolutionary reasons for post-sex sleeping, this is harder to explain. Mentioning evolution, a guy’s primary aim is to produce as many kids as possible, and sleeping doesn’t exactly assist in his quest. But probably since he can’t immediately run off with another girl anyway – remember recovery period – re-energizing himself with the help of sleep may be the best use of his time.

And although there is controversial information as to whether girls feel sleepy after intercourse, a girl frequently falls asleep with the guy anyway (or uses it for some cuddling time), which is great news for him: it means the girl isn’t cheating with another guy. When the guy wakes up and she’s still there, he just might be ready to have sex again.

It’s also possible that falling asleep is just a side effect connected with a more evolutionary necessary reason for the release of vasopressin and oxytocin. Additionally being linked with sleep, both chemicals are also intimately involved in what is called ‘couple bonding,’ the social attachment people generally share. The release of these brain chemicals during orgasm sharpens feelings of trust and bonding between sexual partners, which may partially give a reason to the connection between sex and emotional attachment. This bond is favorable should the couple have a kid, as cooperative kid rearing maximizes the young one’s chances for survival.

The main thought is this: There are lots of potential biochemical and evolutionary explanations to post-sex sleepiness, some indirect and some direct – but nobody has yet pinpointed the exact reasons. Nevertheless, one thing is obvious: we girls better get used to it, while it doesn’t look likely to alter anytime soon.

We are going to leave upset American girls with one final thought: in case you’re frustrated at the ubiquity of the post-sex sleeping, keep in mind that things could be much worse. A recent survey of 10 thousand English guys showed that 48% in fact fall asleep during sex.


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