The frequency of a couple’s life is usually the frequency of a couple’s sex life, the frequency of a couple’s sex life currently does not have a standard answer. Because of individualized differences, the frequency of sex life is not the same, usually with the increase of age, the frequency of sex life will gradually decline. The frequency of sex life of couples varies from person to person, even couples of the same age also vary greatly from each other, if the sex life the next day energetic, physically and mentally happy, it can be. Generally speaking, in physiology, couples after sex if there is no uncomfortable feeling, they can reasonably arrange the time to have sex, do not have to consider how long between. If after sex if there is mental fatigue, mental fatigue, physical weakness, leg soreness, chest tightness, shortness of breath, poor appetite and other symptoms, there should be a certain control, suspend sex. If necessary, it is also necessary to consult a doctor in the hospital. It is recommended that couples take a scientific time to have sex, so that the quality of sex life can be improved, each time before and after sex couples must pay attention to hygiene and timely cleaning of private parts, so as to avoid germs into the private parts of the threat to health. Sex too often is not conducive to physical and mental health, I hope that couples can rationalize the frequency of sex, to avoid harm to their bodies.