At present, the medical profession does not have a clear definition of the standard of the length of sex life, clinical generally believe that the length of sex life in more than 3 minutes belongs to the normal range, the above data is for reference only, due to the physical condition of each pair of partners, different habits of sex life, the length of sex life of the length of time there are obvious differences. Normal adult male sex life length including foreplay time and intercourse time, intercourse time refers to the male penis into the vagina after orgasm until the time of ejaculation, usually more than 3 minutes can be considered normal. Sexual life frequency should be based on their own physical condition, in order not to feel a sense of fatigue, fatigue is appropriate, sexual life in the discomfort, please consult a doctor in a timely manner, active treatment, so as not to delay the condition.