posted on Jan, 10 2003 @ 10:01 AM
Actually, it may have some biological foundation. When the female (of any species) is brought to a climax, certain biochemical changes take place in
the body (and uterus.)
This may make it easier for pregnancy to be achieved (true in humans, actually. The "afterglow" tends to leave the woman relaxed and lying down
rather than getting up and wandering off. This aids sperm retention and increases chances of pregnancy.)