Women’s metabolism is slower during menstruation, because when menstruation, due to the decline in hormone levels in the body, women often appear tired and weak, reduced appetite, so it will lead to a longer rest time for women, metabolism will be slower, which is a normal physiological changes. Women should pay attention to proper rest during this period, eat more hot and nutritious food, appropriate activities, exercise is conducive to the digestion and absorption of the gastrointestinal tract, so as to reduce the outflow of menstrual blood, resulting in lower abdominal cramps and other situations. After menstruation, the basal metabolic rate will gradually increase as the gastrointestinal function gradually recovers, the appetite increases, and the activity gradually increases.