The number of times a month a 40-year-old man has a normal sex life varies from person to person, and is mostly related to the physical quality of the individual. There is no strict limit and standard for how many times a month a 40-year-old man has sex, as long as each time after sex can keep the spirit happy, no waist and knee weakness, mental discomfort and other uncomfortable symptoms can be. Under normal circumstances, if the individual physical quality is better, and the libido is also stronger, the number of sexual life may be on the high side; and if the individual physical quality is poor, or daily work pressure, psychological pressure, as well as the relationship between husband and wife, the number of sexual life may be reduced. But there are foreign scholars believe that the 40-year-old man 6 times a month sex life is appropriate, but only under the premise of ensuring their own health. So 40-year-old man a few times a month sex life can not be generalized, according to their own specific circumstances appropriate adjustment.