How to Teach a Baby to Fall Asleep Alone' Ebook by Susan Urban
Why Practice Guys Go Sleepy After Sex?
This answer is provided by Melinda Wenner of Scienceline, a projection of New York University's Science, Health and Environmental Reporting Program.
For many women, the correlation between sex and snoring is ane of those annoying facts of life: no matter when passionate encounters occur, men always seem to autumn asleep immediately afterwards. Dave Zinczenko, the writer of "Men, Honey and Sex: The Complete User Guide For Women," explained the phenomenon to Huffington Post author Arianna Huffington this style: "Men become to sleep because women don't turn into a pizza."
I doubt I am e'er going to become a pizza, and I'll never accept the foresight to lodge i beforehand. So in lieu of a cure, a better explanation will have to do. Although women sometimes feel sleepy after sex, the miracle does seem more pronounced in men. What is it, and then, that spirals them into the country of nod?
First, the obvious reasons for sex'southward somnolent sway: the act ofttimes takes place at dark, in a bed, and is, after all, physically exhausting (often more than so for the man than the adult female, although this certainly varies). So when sex is over, it's natural for a guy to feel sleepy.
Secondly, research using positron emission tomography (PET) scans has shown that in gild for a person to reach orgasm, a principal requirement is to let get of "all fear and anxiety." Doing so too tends to be relaxing and might explain the tendency to snooze.
So there is the biochemistry of the orgasm itself. Research shows that during ejaculation, men release a cocktail of brain chemicals, including norepinephrine, serotonin, oxytocin, vasopressin, nitric oxide (NO), and the hormone prolactin. The release of prolactin is linked to the feeling of sexual satisfaction, and it also mediates the "recovery fourth dimension" that men are well aware of—the time a guy must wait earlier "giving it some other go." Studies have also shown that men deficient in prolactin have faster recovery times.
Prolactin levels are naturally higher during sleep, and animals injected with the chemical become tired immediately. This suggests a strong link between prolactin and sleep, and so it's likely that the hormone's release during orgasm causes men to experience sleepy.
(Side note: prolactin also explains why men are sleepier after intercourse than after masturbation. For unknown reasons, intercourse orgasms release iv times more prolactin than masturbatory orgasms, according to a recent written report.)
Oxytocin and vasopressin, two other chemicals released during orgasm, are also associated with sleep. Their release frequently accompanies that of melatonin, the master hormone that regulates our torso clocks. Oxytocin is besides thought to reduce stress levels, which once again could lead to relaxation and sleepiness.
What near the evolutionary reasons for postal service-sex sleepiness? This is trickier to explain. Evolutionarily speaking, a man's primary goal is to produce as many offspring as possible, and sleeping doesn't exactly help in his quest. But perhaps since he cannot immediately run off with some other woman anyway — damn that recovery time! — re-energizing himself via sleep may be the best use of his fourth dimension.
And although at that place is conflicting information as to whether women feel sleepy subsequently sexual activity, a woman oft falls asleep with the man anyway (or uses it for some key cuddling time), which is skilful news for him: it means she is non off finding some other mate. When the man wakes up and she's however at that place, he simply might be ready to go again.
It's also possible that sleepiness is just a "side outcome" associated with a more evolutionarily important reason for the release of oxytocin and vasopressin. In addition to beingness associated with slumber, both chemicals are also intimately involved in what is called "pair bonding," the social zipper human mates commonly share. The release of these brain chemicals during orgasm heightens feelings of bonding and trust betwixt sexual partners, which may partially explain the link between sex and emotional attachment. This bond is favorable should the couple take a baby, as cooperative child rearing maximizes the young one's chances for survival.
The lesser line is this: There are many potential biochemical and evolutionary reasons for post-sex sleepiness, some direct and some indirect — but no 1 has however pinpointed the verbal causes. One thing, however, is certain: nosotros females better get used to it, considering information technology doesn't expect likely to alter anytime soon.
I volition leave frustrated American women with 1 final thought: if you are upset at the ubiquity of the post-sexual activity snoring phenomenon, remember that things could be a lot worse. A recent survey of 10,000 English language men revealed that 48 percent actually autumn asleep during sex activity.
Talk about coitus interruptus!
This answer is provided by Scienceline, a projection of New York University'south Science, Wellness and Environmental Reporting Program.
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Source: https://www.livescience.com/32445-why-do-guys-get-sleepy-after-sex.html
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