The main reasons for the weakness and soreness of the whole body during menstruation are the following: 1. Consider that it is caused by anemia, lack of blood and other problems, which may lead to further aggravation of the symptoms of anemia during menstruation due to the loss of more blood, which will lead to various symptoms such as general weakness. 2. Women must pay attention to the body during the menstrual period, to avoid overwork.