Pregnant mothers are always worried that their children will be undernourished and overeat, especially during the Spring Festival holiday, which will eventually lead to their children being overweight. This not only causes an overburden for the pregnant woman, but also increases the risk factors for childbirth, and also creates hidden dangers for the health of the child in the future. Throughout pregnancy, it is normal for a pregnant mother to gain about 12.5 kilograms of weight. What does this 12.5 kg contain? One is the products of pregnancy, such as the fetus, placenta, and amniotic fluid, which add up to 4.7 kilograms in total; the other is the maternal breast, uterus and other tissues, as well as blood and extracellular fluid.