Couple sex 1-2 times a week are normal, older couples a week or two weeks for sex is also normal. The number of sexual life is also related to the physical condition of the couple, if the recent work is busy, physical strength, can also be appropriate to reduce the number of sexual life. If the mental and physical strength is more adequate, can also be appropriate to increase the number of sexual life. It is not recommended to have sex more than 3 times a week. If you have sex more than 3 times a week, men are prone to physical exhaustion and women are prone to vaginal laxity, leading to a decrease in the quality of sex life. There is no fixed time for sex, no need for deliberate control, you can arrange sex according to the physiological needs of the couple, not only to improve the quality of sex life, but also will not affect the health of the body.