Nowhere in the article, or in the many comments that followed it (that I could see), did anyone address one of the main differences between men and women when they have sex that could contribute significantly to an increase sense of fatigue in the men after orgasm… sperm. When men orgasm they produce many millions of sperm that are pumped out, this is something that females *do not* do. The chemicals that are released during orgasm and the sense of fatigue that go with it may be the body’s way of telling the man to rest so it can redirect much needed energy into replacing those millions of sperm. I recall seeing a study a long time ago that said it was not the orgasm that caused the release of the chemical cocktail in men, but the release of sperm (they happen at the same time, but they are separate) and that if men did not ejaculate, they – like women – could continue having sex many times (and should be capable of multiple orgasms).

“Just a observation boys, if you do it right, we’ll want to go to sleep too.
lj, September 25, 2006 at 12:26 pm”

And what is “right”? What’s right for one woman won’t work for another.

“I’ll limit myself to just one example for you to think about since otherwise I could end up writing a 3000 word essay. If things happened for the survival of the species wouldn’t the sex ratio of our, and most other species be rather more biased towards more females and less males in order to create more offspring?
Alan B, September 25, 2006 at 4:55 pm”

No, not when the females are needed to tend to our very slow developing young. The ratio of men and women should be roughly similar so the men can protect and provide for the women and young. The need for equal males would not exist were there no threats to females or the young from things like: other ‘tribes’; disease; animals; the elements, etc. The fewer men there are, the fewer women and children they can provide for or protect.

“Melinda,I appreciate your article, but I really think you missed an important point. The point was made by a couple of people in the comments section. When women have good sex, we pass out! You mention the chemicals released in men after an orgasm, but I’m curious to know what the levels are in women after a GOOD orgasm. I realize it’s harder to ‘hit the right spots’ on a woman, but men need to try more, meaning pay attention and practice more. I think that men are so focused on themselves that they don’t work on giving a woman a good orgasm. We do fall asleep; the better the orgasm, the harder we’ll crash.
hazy, October 12, 2006 at 3:04 pm”

First; orgasms do not occur in half measures – you either have one or you don’t. There is no ‘good’ or ‘bad’. Second; few women ‘pass out’ after sex, all you’re doing is heightening your expectations to unachievable levels, and then expressing disappointment that you don’t get that all the time.
Finally; men do not need to ‘try more’. Women have a much easier time satisfying men than men do satisfying women. Women vary a great deal. If you know you take a long time to orgasm, then you should start arousing yourself much earlier so you’ll be closer to orgasm before you even get into bed with a guy. It really isn’t fair to simply say ‘men need to try more’. You need to be responsible for your own orgasm. If your orgasm has a combination lock which must be undone, then the least you can do is discover it for yourself rather than expecting a man to do it and then expressing dissatisfaction when they don’t.

“i know the truth about men falling asleep after sex its because in the stone age when the men was raping as you may call it woman afterwords they would dose or fall asleep and this gave the woman a chance for them to get free

Maz, February 1, 2007 at 5:02 am”

You know the truth all right. It’s spelled ‘L.I.E’.

“For those who want to know the source of the statistic about English men falling asleep during sex: http://www.dailymail.co.uk/pages/live/articles/health/menshealth.html?in_article_id=338126&in_page_id=1800&in_a_source=
Melinda, December 23, 2007 at 1:20 am”

That article makes it clear that the men *have* fallen asleep before, but does not say that it has happened more than once, or how many times the people in question had sex, or their state at the time of the incident (alcohol, etc). I’m willing to bet the stats would be the same the world over.

“Love how all the Englishmen jump in calling it all lies and rubbish! How would you know? Do you discuss your sex life with every other Englishman you see on the street? I’m pretty sure someone who took the time to research all that, enough that even you took a gander, has her facts straight. She wasn’t saying Americans are better at sex she was just citing a research study. It’s funny how you resort to calling Americans fat and “ponces” (an insult most Americans don’t get/couldn’t care less about) to defend yourselves. Makes you sound all the more like the picture perfect top hat toting sexually incompetent Englishman dweeb.
Richard, May 9, 2008 at 4:58 pm”

The irony being; you just did exactly what you were mocking the English posters for.

“I’m 26 years old male. Never had a girlfriend. I’m a geek, and I masturbate once, or twice every single day.
the me, February 8, 2009 at 4:15 pm”

Get used to it. You’ll find that sex is much much harder to get for you than it
is for a woman.

“Describing your male bravado on a forum? Nice work.
System3142, August 20, 2009 at 8:11 pm”

It was one post and there have been a dozen replies already. The guy was an idiot. Let it go.

>>“Just a observation boys, if you do it right, we’ll want to go to sleep too.
lj, September 25, 2006 at 12:26 pm”<>“I’ll limit myself to just one example for you to think about since otherwise I could end up writing a 3000 word essay. If things happened for the survival of the species wouldn’t the sex ratio of our, and most other species be rather more biased towards more females and less males in order to create more offspring?
Alan B, September 25, 2006 at 4:55 pm”<>“Melinda,I appreciate your article, but I really think you missed an important point. The point was made by a couple of people in the comments section. When women have good sex, we pass out! You mention the chemicals released in men after an orgasm, but I’m curious to know what the levels are in women after a GOOD orgasm. I realize it’s harder to ‘hit the right spots’ on a woman, but men need to try more, meaning pay attention and practice more. I think that men are so focused on themselves that they don’t work on giving a woman a good orgasm. We do fall asleep; the better the orgasm, the harder we’ll crash.
hazy, October 12, 2006 at 3:04 pm”<>“i know the truth about men falling asleep after sex its because in the stone age when the men was raping as you may call it woman afterwords they would dose or fall asleep and this gave the woman a chance for them to get free

Maz, February 1, 2007 at 5:02 am”<>“For those who want to know the source of the statistic about English men falling asleep during sex: http://www.dailymail.co.uk/pages/live/articles/health/menshealth.html?in_article_id=338126&in_page_id=1800&in_a_source=
Melinda, December 23, 2007 at 1:20 am”<>“Love how all the Englishmen jump in calling it all lies and rubbish! How would you know? Do you discuss your sex life with every other Englishman you see on the street? I’m pretty sure someone who took the time to research all that, enough that even you took a gander, has her facts straight. She wasn’t saying Americans are better at sex she was just citing a research study. It’s funny how you resort to calling Americans fat and “ponces” (an insult most Americans don’t get/couldn’t care less about) to defend yourselves. Makes you sound all the more like the picture perfect top hat toting sexually incompetent Englishman dweeb.
Richard, May 9, 2008 at 4:58 pm”<>“I’m 26 years old male. Never had a girlfriend. I’m a geek, and I masturbate once, or twice every single day.
the me, February 8, 2009 at 4:15 pm”<>“Describing your male bravado on a forum? Nice work.
System3142, August 20, 2009 at 8:11 pm”<<

It was one post and there have been a dozen replies already. The guy was an idiot. Let it go.

The evolutionary explanation is simple. Once a male human being has had sex, it is better for him to stay and bond with the woman than to sleep with another woman. Male humans are not fish. If men want their offspring to survive, they have to stick around. They also have to keep their woman from having sex with someone else. Having sex with a woman who is not your mate is not that advantageous, especially when you throw in the risk that your own mate will cheat while you are off somewhere else. So going to sleep with your mate is a great response from an evolutionary point of view for HUMAN males.

Similarly, territorial hunting animals will have to range across a very large distance, into other territories, with very little rest in order to find a female to mate with.

Once the mating is done, the immediate need to dominate other males and attract a mate is somewhat over, so an “enforced” sleep to recover expended energy seems like a good idea.

Perhaps the need for human males to sleep after sex relates in some way to that part of our past in which males of our species also had to expend a lot of energy to ensure they could mate with females.

Well with my wife I try normally to go to sleep before sex. With my mistress, who I only see every few months, I can’t stay awake enough.

That “men fall asleep because women don’t turn into pizzas” line just doesn’t make any sense. So men are hungry after they have sex? No. Not particularly. By the way, that “PET research” sounds dubious at best. A brain scan does not tell you exactly how you are feeling, nor whether your emotions have anything to do with your current state of being.