Why Does Sleep Take Over After Orgasm? Science Explains This Phenomenon

A study reveals that prolactin levels increase four times more after sexual intercourse than after masturbation, leading to a more pronounced feeling of satisfaction and fatigue. This phenomenon is due to a hormonal discharge, including a drop in dopamine and a massive release of prolactin, oxytocin, and endorphins. Additionally, sexual activity is a physical exercise that also contributes to the fatigue felt after orgasm.