17. Orgasm Contractions Exist To Get You Preggers
Sure, orgasms feel amazing, but their real purpose from an evolutionary aspect is to grab onto that sperm and pull it up toward the cervix with each contraction. It was actually once believed that women couldn't get pregnant without an orgasm, however, that theory was debunked. You don't need to orgasm to get preggers, but that is why your muscles contract like they do when you climax.