40-year-old people are generally recommended to have intercourse 2-3 times a week is more appropriate, but there is no clear limit, need to be analyzed in conjunction with their own situation. General couples in 40 years old when the sexual function is still relatively strong, according to the physical condition of reasonable arrangements for sexual life, generally 2-3 times a week is appropriate to the body does not feel tired, but the specific number of coitus is not the same, mainly combined with the individual physique physical condition. If the physical condition is relatively good, usually work is not tired, can be about 3 times a week. If the physical condition is not good, feel tired or uncomfortable after intercourse, need to appropriately reduce the number of sexual intercourse. So as not to over-frequency sex life lead to male fatigue, fatigue or lead to aseptic inflammation of the prostate, may also allow women to increase the chances of suffering from gynecological inflammation. Couples in their 40s should pay attention to the moderation of sexual life, should not be too frequent, in order to the next day without fatigue, full of spirit is appropriate.