Orgasm can reduce sensitivity to pain and improve your sleep. The highlighted article, 10 Surprising Health Benefits of Sex: The perks of sex extend well beyond the bedroom, describes multiple benefits of sex to overall health and well being. The release of prolactin after orgasm induces sleepiness and the release of oxytocin and dopamine help alleviate stress. Another reminder that a healthy sex life fosters better physical and mental health for both men and women.