Satisfaction, a sense of relaxation and comfort that is felt after orgasm is often cause drowsiness. But you should not rush to close my eyes after having sex because this is the best moment to express love and attention on the couple.
"After sex the hormone oxytocin is associated with a sense of attachment to each other will increase, so this is the right time to strengthen relationships with partners," said Daniel Kruger of the University of Michigan School of Public Health.
