During sex, some men ejaculate quickly and thus feel very distressed. The main reasons for fast ejaculation include masturbation, as well as the existence of some psychological and physical problems. 1, masturbation. Masturbation is actually not the main reason, except that frequent masturbation is afraid of being seen by others and needs to end as soon as possible. Over time, premature ejaculation is also formed in the subconscious. If you masturbate frequently, it is advisable to stay away from now on. 2, psychological requirements. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. 3, physical reasons. Chinese medicine believes that kidney deficiency is the main cause of fast sex, can eat some aphrodisiac food, such as leeks, walnuts. Of course, other body organs may also lead to, think what circumcision, prostate inflammation will also cause. The normal sex life is what everyone aspires to, and if there is a problem, it is recommended to quickly go to the local hospital and consult a doctor to solve it.