A woman’s menstrual cycle is not directly affected by too much sex. However, if a woman’s sex life is too frequent and interferes with her normal rest, such as staying up late, it may affect her menstrual cycle. Most of a woman’s hormones are secreted at night. If sex is too frequent and affects a woman’s normal rest, it can affect the metabolism of many hormones in the body and cause disruptions in the menstrual cycle. In addition, too frequent sex may also break the internal environment of the vagina, leading to gynecological inflammation. When the inflammation affects the ovaries, it can affect the normal hormone secretion and ovulation function of the ovaries, thus affecting the normal menstrual cycle.