Aunt period refers to the period of menstruation, women who exercise strenuously during menstruation may lead to an increase in menstrual flow, in addition, it may also cause endometriosis and other diseases. The process of a woman’s menstruation is the process of shedding the endometrium, and when the endometrium is shed, some blood vessels will atrophy and rupture, so there will be bleeding. During menstruation if strenuous exercise increases the blood circulation in the body, this is when the bleeding from the blood vessels will increase, leading to an increase in the amount of menstruation. When a woman is menstruating, her body’s immunity will be reduced and she will be easily tired, strenuous exercise is not recommended, which will cause physical discomfort. In addition, strenuous exercise may cause the uterus to contract, and at this time the menstrual blood may reach the abdominal cavity through the fallopian tubes, which will cause endometriosis and other diseases. Women are recommended to rest more during menstruation, in addition to pay attention to abdominal warmth. Pay attention to personal hygiene.