The duration of sex varies greatly from individual to individual, and it is generally not advisable to have sex for too long. The reason for this is that the entire reproductive system will be in a congested condition when you have a long and continuous life, which may lead to pelvic inflammatory disease in women and prostatitis in men. It is recommended that the time of sexual life is greater than 2 minutes, this time is normal. If the time of sexual life lasts more than 40 minutes, the body will also feel very fatigue, which will affect the normal work of the next day. It is recommended that the usual sex life should pay attention to control the rhythm of pumping, you can properly control the time of sexual intercourse, in 10-15 minutes to end, you can achieve physical and mental pleasure, but also do not make yourself feel too tired.