West Yorkshire, after having sexual relations man usually falls asleep immediately. But for some women, after the sex they've chosen to do the housework. What causes it?
It turned out that the cause of women stay awake after having sex is a chemical substance of his own sperm. Conditions were also found in research on fruit flies.
Male flies will go straight to bed just after the fertilization process while the females will fly straight to move and go do something after the fertilization process is complete.
Researchers suspect, there is a chemical substance called sex peptide or protein on sperm that affect the condition of man after sex. Sex peptide is also found in fruit flies. Fruit flies are commonly used as experimental material about sex because they have factors in human likeness.
"Not just a regular activity, activities undertaken after the fertilized female fly is a form of voluntary behavior. But the real key is the sex peptide substance contained in the sperm of male flies," said Professor Elwyn Isaac of the University of Leeds as Dailytelegraph debut, Tuesday (12 / 1 / 2010).
Professor Isaac says that the female flies that mated with male flies that produce the sperm sex peptide typically will experience this condition.
"Just as with humans, men who have sex peptide substances in sperm tend to have a direct partner to do other activities after sex like doing the housework, while he himself fell asleep immediately. These chemicals in the sperm that a man who turned out to encourage women to stay awake after having sex, "said Professor Isaac.
It turned out that the cause of women stay awake after having sex is a chemical substance of his own sperm. Conditions were also found in research on fruit flies.
Male flies will go straight to bed just after the fertilization process while the females will fly straight to move and go do something after the fertilization process is complete.
Researchers suspect, there is a chemical substance called sex peptide or protein on sperm that affect the condition of man after sex. Sex peptide is also found in fruit flies. Fruit flies are commonly used as experimental material about sex because they have factors in human likeness.
"Not just a regular activity, activities undertaken after the fertilized female fly is a form of voluntary behavior. But the real key is the sex peptide substance contained in the sperm of male flies," said Professor Elwyn Isaac of the University of Leeds as Dailytelegraph debut, Tuesday (12 / 1 / 2010).
Professor Isaac says that the female flies that mated with male flies that produce the sperm sex peptide typically will experience this condition.
"Just as with humans, men who have sex peptide substances in sperm tend to have a direct partner to do other activities after sex like doing the housework, while he himself fell asleep immediately. These chemicals in the sperm that a man who turned out to encourage women to stay awake after having sex, "said Professor Isaac.
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