Taken from Planned Parenthood website. Go on over there to read all them!
- Masturbation releases stress and physical tension. Many people masturbate to relax, and it can help some people fall asleep.
- Orgasms — whether they're from masturbation or sex with a partner — can act as a natural painkiller. Some women masturbate to relieve menstrual cramps. Research has also shown that orgasms may even prevent endometriosis, a disease of the uterine lining.
- One study found that frequent ejaculation from masturbating may reduce a man's chances of developing prostate cancer.
- solo sex is the ultimate form of safer sex — there is no risk of pregnancy or infection.
- The myth is that masturbation ruins how other kinds of sex feel. This is not true. The truth is that masturbation can help other kinds of sex feel better, not worse. It’s about discovering what kinds of touching and sensations work for you, and it's a way to learn to have orgasms. Most people who reach orgasm with a partner have also experienced an orgasm from masturbation.
- The myth is that too much masturbation will make you blind, crazy, or stupid, damage your sex organs, or stunt your growth. Some people masturbate every day — or even more than once a day. That's fine. So is there such a thing as "too much" masturbation? According to the experts (the American Psychiatric Association), it's only when masturbation gets in the way of daily activities — like going to school or work, or meeting friends — that it would be considered "too much." And not many people have that problem.