The length of time that each person masturbates varies from person to person, and most people adolescence once a hand rush about 3-5 minutes is the effective category. For men, generally once a week, once about 3-5 minutes is the effective category, there is no strict time standard, some people may be more sensitive genitalia, or easily stimulated by the outside world, the time is shorter, some people have to go through a longer period of time to achieve the purpose of release. Moderate and reasonable hand flush can also help guys to discharge semen and relieve psychological pressure, is a certain benefit, but if too many times may have an impact on health, may cause impotence, premature ejaculation, kidney deficiency and other diseases, so the frequency is important.