Why do men lose interest in women after they vacated their sperm ducts?
Usefulness expired. loLOL! jk. Actually, 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.” 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, so it’s likely that the hormone’s release during orgasm causes men to feel sleepy. (Side note: prolactin also explains why men are sleepier after intercourse than after masturbation. 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. What about the evolutionary reasons for post-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 another woman anyway — damn that recovery time! — re-energizing himself via sleep may be the best use of his time. And although there is conflicting information as to whether women feel sleepy after sex, a woman often falls asleep with the man anyway (or uses it for some key cuddling time), which is good news for him: it means she is not off finding another mate. When the man wakes up and she’s still there, he just might be ready to go again.
It’s part of nature... ... similar to when a female praying mantis kills and devours her mate.
Blue Sky 🐾
When that happens, the woman has usually given it up to soon. Women have to make men earn it.
Women move on to emptying the mans wallet...
Brain gets shut down. Like something got sucked out of it
I know you are trying to be clever, but your command of the English language is letting you down. Men do not 'vacate' their sperm ducts,they EMPTY them. To say they 'vacate' implies the men are inside the sperm ducts.... which they are not. Plus there is also the fact that this is a stupid question. Why not study a bit, and then try and form a question that makes sense?