After an orgasm, the body releases hormones like oxytocin and prolactin, which can induce relaxation and sleepiness, and also reduces levels of stress hormone cortisol.
Here's a more detailed explanation:
Hormone Release:
Orgasm triggers the release of various hormones, including oxytocin (the "cuddle hormone"), prolactin, and serotonin.
Oxytocin and Prolactin:
These hormones are associated with feelings of relaxation, well-being, and can contribute to drowsiness.
Reduced Cortisol:
Orgasm also helps lower levels of cortisol, a hormone linked to stress, further promoting relaxation and sleep.
Parasympathetic Nervous System:
Orgasm signals the parasympathetic nervous system to shut down, which is responsible for calming the body and promoting relaxation and sleep.
Serotonin:
The brain also pumps out serotonin, which is responsible for good mood, relaxation, and post-sex drowsiness which can make us want to nap.