It's all biochemistry,
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 time” that men are well aware of—the time a guy must wait before “giving it another go.”
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, so it’s likely that the hormone’s release during orgasm causes men to feel sleepy.
For unknown reasons, intercourse orgasms release four times more prolactin than masturbatory orgasms, according to a recent study.)
Oxytocin and vasopressin, two other chemicals released during orgasm, are also associated with sleep. Their release frequently accompanies that of melatonin, the primary hormone that regulates our body clocks. Oxytocin is also thought to reduce stress levels, which again could lead to relaxation and sleepiness.
Male semen (cum) has a lot of nutrients which literally drain the male for a while... consider it a man's life juice and the more he loses this energy the more weak and tired he will feel.1 0 0 0Interesting that a study suggests 4 times more prolactin release during intercourse than masturbation. That's what threw me off, b/c I found it hard to believe anyone would masturbate if they were that physically drained afterward. Thanks so much! Very informative! :)
For a lot of men, orgasm, particularly when we have to really work to make it happen, is exhausting. That he's up for round 2, so to speak, is a good thing. Just snuggle up and enjoy the after glow.
1 0 0 0
Scroll Down to Read Other Opinions
What's Your Opinion? Sign Up Now!What Guys Said
(18)yes it is.
It's some kind of weird biological quirks we got. No idea why though, but it tires out all guys to some extent.1 0 0 0Once I cum I am also ready for a nap, or at least cuddling.
0 1 0 0I get more alert from that and far from sleepy.
0 0 0 2It depends on how much energy I have left and how hard my day was. If we have morning sex, Im full of energy and get even more awake. But if I have to do uber at my part time job and then learn at home and then go to the gym to free my mind, I get pretty tired after I came yes. But I still try to stay awake and stroke and cuddle and massage her, so that she doesn't feel used or something.
1 0 0 0Isn't it cute?
Yes it's very common / normal
And no it is not relevant. Except it is coming that makes him tired2 0 0 0
Most Helpful Guys