The frequency of sex varies from person to person and cannot be generalized, and needs to be judged according to personal physical fitness, sexual needs, age and other comprehensive factors. Under normal circumstances, the couple to carry out a normal, regular, controlled sex, to maintain family harmony, to promote the health of both sides have certain benefits, and the best frequency of sex should be based on personal circumstances. Generally speaking, young adults can keep their sex life at 2-3 times a week, middle-aged people with declining physical conditions, the frequency of sex life needs to be reduced appropriately, it is recommended that 4-8 times a month or so. However, patients do not need to require themselves according to the above criteria, its appropriate not to appear fatigue and discomfort symptoms. In short, proper sex can release sexual pressure, adjust the hormone level in the body, and promote the emotional communication between husband and wife. However, if there is no intention to get pregnant during sex, contraceptive measures should be taken regardless of ovulation or safe period.