People are only just realising why a lot of men fall asleep after sex

dailystar.co.uk:

sleep after having sex, then you may be interested to hear that there's an actual scientific reason to it.And it's all to do with your brain chemicals.Considering that most people have sex in a bed, it's understandable that the body would associate this with sleep.Most couples also tend to have sex either at night or maybe in the morning.During both of these times, it's likely that you will be more naturally tired.However, Melinda Wenner, of Scienceline, told Live Science that there is a bigger reason than just mere object association and time.During sex, the brain releases a mixture of brain chemicals.

These include norepinephrine, serotonin, oxytocin, vasopressin, nitric oxide (NO), and the hormone prolactin.Prolactin is linked to the feeling of sexual satisfaction, and is also the cause of the 'recovery time' before men are ready to go again.As well as during sex, prolactin levels tend be higher during sleep.The hormone may also explain why men often become sleepy after partnered sex but not after masturbation.Having an orgasm with a partner releases four times as much prolactin than a solo orgasm, though scientists aren't quite sure why happens.Oxytocin and vasopressin, which are both released during orgasm, are associated with sleep too.Their release frequently comes alongside the release of melatonin, which is the hormone that regulates the body clock.Similarly, PET scans have discovered that in order to reach orgasm, you must release all fear and anxiety, which can also cause sleepiness.So if you're reaching orgasm, chances of you feeling sleepy after sex may increase.Studies suggest that women are less likely to fall asleep immediately after getting jiggy, even if they do reach orgasm.After sex, women are more.