According to a report by Noticias CDE, the drowsiness that often follows sexual activity is not a sign of laziness or lack of interest, but a natural biochemical process. The article, written by Carlos Roa, details how intense physical contact and orgasm trigger a hormonal cascade that shifts the body from alertness to recovery mode.
The key player is prolactin, a hormone that rises after climax and inhibits dopamine, the neurotransmitter responsible for excitement and wakefulness. As dopamine levels drop, the brain receives signals to relax and disconnect. Meanwhile, skin-to-skin contact releases oxytocin, which reduces cortisol—the stress hormone—and facilitates entry into deep sleep phases, where cellular repair occurs.
Contrary to the common belief that this effect is exclusive to men, the article notes that women also experience a prolactin surge, improving sleep quality and strengthening the immune system. The desire itself consumes significant energy, and prolactin ensures the body’s machinery shuts down for recovery. This induced sleep is often more restorative than usual, as the body enters a state of biological satisfaction and security before falling asleep.