Too much exercise for pregnant women has a certain impact on the fetus. For example, pregnant women can not climb stairs, with the prolongation of pregnancy week, the abdomen gradually increases, the spine will change, climbing stairs or downstairs can not be well grasp the balance, easy to fall, resulting in miscarriage; human body weight in walking 3/4 fall on the knee joint, climbing stairs is easy to damage the knee joint; prohibit jumping sports, such as playing basketball; can walk, brisk walking, swimming, or under the guidance of professionals to learn Yoga and aerobics during pregnancy.