For most women who sit on the moon, if they eat more food, they will usually gain weight. Only a small number of thin women may not gain weight due to genetic factors, personal constitution, etc.: 1, the general population: women in the process of pregnancy and childbirth, will consume a lot of their own physical strength and energy, usually during the menstruation period to nourish, to ensure a balanced mix of nutrients to enhance the body’s nutritional needs, can promote lactation and their own body recovery. If the amount of food is significantly increased, coupled with reduced exercise during the menstruation period, it will be obvious fat; 2, a small number of thin people: a small number of women due to genetic or personal physical factors, even if the amount of food during the menstruation period, will not be obvious fat, but also belongs to the normal phenomenon. Such people need to pay attention to a balanced diet to avoid insufficient nutrition resulting in insufficient milk. It is normal to gain weight during the menstruation period. For women who want to maintain their figure, they should not deliberately reduce the amount of food they eat during this period, but should focus on enhancing nutrition, restoring their body functions and meeting the demand for breast milk for their babies. At the same time, during the menstruation period, pay attention to ensure sufficient sleep, appropriate amount of exercise, to ensure that the room temperature and humidity is appropriate to avoid catching a cold.