We all know about the “hold me” situation that follows sex, and we have the goods on why it is that guys just want to crash right after. You’ll be glad to know nature has a reason for this one that you can explain.

Scientific research proves males experience an intense rush of chemicals, including dopamine, during the early stages of a sexual experience, and after their sexual experience, it quickly wears off. The sensory depletion combined with blood quickly flowing away from the genitals makes it difficult for guys to stay awake. Link