Beat It

Did you know that most guys in long-term relationships continue to masturbate-even when they're having regular sex? A 1994 study found that nearly 85 percent of men living with a sexual partner masturbate, compare with only 45 percent of women.

And while the cliche' is that it's the sex-starved husband who is driven to furtively spending some "me" time in the bathroom, research shows that most men's masturbation habits have nothing to do with how often they have sex.