Sent to me by a friend. I'm not sure of the authenticity but certainly some seem a bit dubious.
* A medical study conducted in Pennsylvania showed that people who have sex once or twice a week have their immune systems boosted slightly.
* Male bats have the highest rate of homosexuality of any mammal.
* Humans and dolphins are the only species that have sex for pleasure. (Bonobos?)
* Most men's erections are five-and-a-half to six inches long. Although men's penis sizes tend to vary greatly when they're soft, the smaller ones expand more when erect than the larger ones.
* Rates for male sterilization have dropped slightly over the years, while rates of female sterilization have gone up.
* Forty-two percent of American women usually have orgasm during sex with their primary partner, 29 percent always have orgasms during sex, 25 percent sometimes or rarely have orgasms, and four percent are not orgasmic at all.
* The record for male orgasms is 16 in one hour. (bloody hell!)
* The average male member in all its glory is six inches long and five inches in circumference.
* In ancient Greece, young aristocratic women were deflowered by having her hymen pierced by a stone penis before marrying.
* The maximum depth at which vaginal stimulation occurs is only two inches, proving it is width and not length that actually matters.
* In the 1950s it was found that 75 percent of men ejaculate within two minutes of penetration, with the orgasm lasting only a few seconds. The longest documented orgasm for a woman is one minute.