Masturbation can occur in men and women of all ages and has different causes. Masturbation during childhood is mostly due to unconscious and occasional play with the genitals, or due to the stimulation and pleasure caused by rubbing the genitals when wearing tight pants or riding across activities, usually without orgasm. Both men and women, after puberty, due to physical changes in the body, and the resulting sexual impulses and sexual desire, full of longing, curiosity and fantasy about sex. Normal sexual desire is the basic requirement for human maturity and reproduction of offspring, and is a normal physiological phenomenon. But from sexual maturity to be able to legally declare sexual energy, meet the sexual requirements (registered marriage) generally have to wait a few years or more, and the sexual needs of this period of time is often the highest, always looking for opportunities to vent the full sexual desire. Both men and women may occasionally stimulate their genital organs and reach orgasm without thinking about the opportunity, an act called masturbation. Modern medical science believes that masturbation is a common and normal phenomenon in the process of sexual maturity of adolescents, reasonable and moderate masturbation is not harmful to the health of the body, is a reasonable discharge of sexual energy. In foreign countries, some scholars found that the United States has a history of masturbation accounted for 92%-97% of men, 55%-68% of women. Poland, the former Soviet Union and other countries scholars survey also shows that during sexual maturity, about 93%-96% of healthy men have masturbation. In recent years, domestic scholars have done some research on the current situation of masturbation and the mental health of masturbators. As early as 1989-1990, scholars conducted a survey of 20,000 cases of sexual civilization found that 12.5% of male and 4.7% of female secondary school students had masturbation; 59.0% of male and 16.5% of female college students had masturbation. 2010, 7077 people participated in the network survey showed that 96.38% of the respondents had masturbated more than once, of which 75.96% The majority of people masturbate because they “do not have a fixed sexual partner and need to release their sexual urge” and “want to get orgasm from it”. The incidence of masturbation tends to increase with age, and the incidence of masturbation tends to increase with age; the rate of masturbation increases more rapidly in women than in men, however, the rate of masturbation in men is still much higher than that in women. Masturbation is definitely not a sinful act, and the old belief that masturbation is harmful has gradually been diluted, but the mainstream cultural bias still holds that masturbation is only a supplement to sexual intercourse. The reality is that masturbation has the value of an independent act, and is one of the standard forms of sexual behavior that can yield the same physiological responses as sexual intercourse. Moderate masturbation does not cause any harm to the body, good use can also make up for the lack of people can not have sex with couples, such as unmarried young people, separated couples, divorced and widowed people, people with sexually transmitted diseases, people with disabilities, people whose spouses are sick and can not have sex, which helps to bring out more enthusiasm and energy for work. Masturbation can also be used to collect semen specimens for clinical examination, and healthy men can also donate their semen through masturbation. Masturbation reduces the spread of sexually transmitted diseases and does not involve others, or get involved in cheating sexual behavior and emotional entanglements, and does not lead to sexual assault or even sexual crimes, and avoids moral and social problems caused by sexual problems. Therefore, masturbation itself is harmless, must be natural, do not have the psychological pressure, so as not to produce guilt afterwards, self-blame and other emotions, and easy to masturbation misunderstanding of fear, and many “imaginary” disease, or their own disease and masturbation far-fetched associated with. But there is a limit to everything, reasonable and moderate masturbation is normal, but excessive masturbation can also cause some damage to the body, not just in a nutshell. The actual fact is that you’ll be able to get a lot more than just a couple of days to get a lot more than just a couple of days.