Twenty percent of women who live with their boyfriends have more than one sex partner.
In the 18th Century, another term for anal sex was "navigate the windward passage."
"Telephonicophilia" is the technical name of arousal derived from phone sex.
The average bout of sexual intercourse burns 360 calories/hour.
The first vibrators were invented in 1869 as treatment for what was known then as hysteria.
A typical orgasm lasts from three to ten seconds, with contractions occurring every 0.8 seconds for both men and women.
Ecouteurism is listening to others having sex without their consent.
The modern IUD invented was invented in 1909.
Everyday, 200 million couples around the world have sex, which is about over 2000 couples at any given moment.
Left-handers usually reach puberty 4 to 5 months after right-handers.
