Therefore, dieting or drugs should not be used to lose weight during breastfeeding. Instead, the body naturally loses weight by properly controlling dietary calories under the condition of normal milk secretion and stable physical condition. Pay attention to the staple food of combining fine with coarse, and eat more fruits and vegetables, fat and protein. In addition, you can also control your weight by appropriately increasing some activities. But it is not suitable for strenuous exercise during this period, because lactic acid produced by exercise will enter the milk, which is not good for the baby. Light exercise can last ten to fifteen minutes.