How often 17-year-old boys masturbate is normal and varies from person to person. Generally speaking, it is more common to masturbate 1-2 times a week, which is good for your body. There is no uniform standard for whether masturbation is moderate or not, nor is it normal or not. Some people have a good physique, a certain stage every day masturbation may not be relevant, but some people have a weaker physique, may be once a month are caused by physical discomfort. The frequency is moderate, in order not to affect the next normal erection, no physical discomfort symptoms for the principle. It is normal to masturbate without exceeding this principle and to pay attention to cleanliness and hygiene. If you masturbate excessively, you may have a poorly developed reproductive system, erectile dysfunction, premature ejaculation, and even the possibility of fertility. It is better for adolescent males to develop good habits and try to divert their attention from sex.