Having an orgasm relieves menstrual cramps because the vigorous muscle action moves blood and other fluids away from congested organs.
It's been estimated that one out of every two hundred women is born with an extra nipple.
The more testosterone you are exposed to in the womb, the longer your ring finger is. For men, longer ring fingers can mean longer penises.
Males under the age of forty are typically able to achieve an erection in less than ten seconds.
According to a U.S. market research firm, the most popular American bra size is currently 36C, up from 1991 when it was 34B.
The left testicle usually hangs lower than the right for right-handed men. The opposite is true for lefties.
About 40% of boys develop a small lump under one or both nipples during puberty. This condition (called gynecomastia) usually disappears by itself in about a year.
Besides the genitals and the breasts, the inner nose is the only other body part that routinely swells during intercourse.
About 50% of women have one breast that is larger than the other.
Studies have shown that the larger a man's testicles, the more likely it is he'll cheat on his mate