A woman usually masturbates by rubbing, stroking or squeezing her clitoris. The clitoris is the most sensitive sexual part of a woman. She might also touch her breasts and other sensitive areas of her body. A man usually masturbates by stroking, rubbing or 'pumping' his penis, and may concentrate particularly on the tip, which is the most sensitive part. Masturbation is sometimes referred to as playing with yourself, or, especially with men, jerking off, a hand job, or wanking.
There is no physical reason why you should or shouldn't masturbate. It is not true that you'll go blind if you masturbate.
People don't necessarily begin masturbating when they reach puberty. Some people hardly ever masturbate, and others masturbate a lot. It varies according to how a person feels. Many people masturbate even when they are in a relationship with someone. Masturbation can last as long as you want, but generally people masturbate for between a few minutes and half an hour.
There is no physical reason why you should or shouldn't masturbate. It is not true that you'll go blind if you masturbate, or that you will become weak or lose your health. It is not possible to masturbate too much, though you should stop if you start to make yourself feel sore. Some people think that if a man doesn't masturbate his testes will fill up with sperm. This is not true; the sperm are just absorbed into his body. It is also not true that women who think about sex or masturbate are 'easy'.