In male clinics, we often meet young people who come to the clinic because they have “fast ejaculation”. The actual fact is that their judgment of ejaculation is only based on the duration of masturbation. In fact, the masturbation time is not accurate for judging the early and late ejaculation. The time of ejaculation is influenced by various factors such as physiology, psychology and environment. For men who have had a stable life for more than a year, their ejaculation time may be diagnosed as premature ejaculation only if it is less than 2 minutes. However, there are many differences between substantial life and masturbation, and the latter cannot replace the former, nor can it fully reflect the real sexual ability of men. 1, masturbation and sex have very different effects on the male psyche Sexual life is a normal way for men and women to have sex, while masturbation is a method taken by individuals for sexual satisfaction. While masturbation, men just to enjoy the pleasure, not enough attention to the process, and may even be deliberately omitted. The actual fact that many people masturbate secretly and are in a hurry to finish, over time will develop the habit of ejaculating quickly. A foreign expert has done a survey on a group of men with normal sexual function and found that the group of men in normal sex, ejaculation time averaged 8.25 minutes; while in the same environment, their ejaculation time during masturbation averaged only 4.89 minutes. “Men should not be overly concerned about ejaculation time; it’s better to go with the flow.”