There is no standard data on how often couples have sex, it varies from person to person and it is not possible to generalize, subject to the fact that sex does not affect the next day’s work life. The frequency of a couple’s sex life needs to be based on age and physical condition. Under normal circumstances, healthy couples at least one to two times a week, young couples may have to two to three times, older couples may have to be relatively less, once a week or two weeks three times and so on. However, when couples are busy at work or in poor health, the number of times they have sex can be reduced according to the situation. In fact, there is no clear rule for couples to have sex, as long as it does not affect the normal work life. Normal sex life helps physical health, but also can enhance the relationship between husband and wife. Couples in the process of sexual life should pay attention to pubic hygiene, sexual life in moderation.