Do not menstruation according to the specific reasons, choose the relevant treatment, can not say that exercise is the most useful method. Women who do not have menstrual periods should first exclude the factor of pregnancy, if there is no pregnancy, the lack of menstrual periods may be related to stress, emotions, pathological factors, according to different reasons to choose the relevant treatment. 1. Stress, emotion: women who have recently been under too much pressure, poor mood, can also cause menstruation delay does not come, it is recommended to adjust the mind, relax, do not stay up all night, moderate exercise, to menstruation to come are helpful. 2. Pathological factors: polycystic ovary syndrome will appear amenorrhea, it is recommended that patients go to the hospital, under the guidance of the doctor can take ethinyl estradiol cyproterone tablets to treat. It is recommended that friends who do not have menstruation, timely medical treatment to identify the cause of the disease, symptomatic treatment.