You Won't Go Blind

It's something people don't talk about, but almost everyone does it: masturbation. In one national study, 95 percent of men and 89 percent of women said they had masturbated.

"We are programmed, as best we know, to need orgasms," says Gloria Brame, Ph.D., a clinical sexologist in Athens, Ga. "It's a fundamental aspect of men's health, right up there with brushing your teeth." And the more you know about what satisfies you solo, the more pleasure you get from sex.

You likely know that a little wanking won't make you go blind or cause your penis to fall off. (Let's face it, you'd know by now.) In fact, a little time alone is perfectly healthy for you.