Weight loss during menstruation is not fast and is very harmful to the body. When menstruation, women’s bodies are weaker, there will be weakness, drowsiness, loss of appetite and other problems, this time to strengthen the nutrition, should be supplemented with sufficient amount of protein, vitamins, trace elements every day to meet the body’s metabolism, bleeding during menstruation to depletion of the body’s nutrients, the need for appropriate supplementation, adequate rest. Whether it is through dieting, or exercise to lose weight, it will have adverse effects on the body, if excessive dieting, the body can not take in enough nutrients, there will be a deficiency of qi and blood, and in serious cases, it will lead to a decrease in the amount of menstrual blood, or even amenorrhea problems. Excessive exercise during menstruation may cause an increase in the amount of menstrual blood, which in the long run will lead to anemia, poor immunity and other problems.