While it surely does help females for being exhausted or something along the line, its only the males who's orgasm produces sleep inducing hormones. As a male you cant prevent being sleepy after jerking off.
If you have problems sleeping, I say don't sleep at all. Avoid it. Go through the whole day without any sleep, and reset your schedule. 9:00 is the best time to go to sleep I find.
Some people think too much. Women have the highest % of insomnia.
