Sleeping seems simple, but there is a lot of learning, for women, long-term bad sleeping position, may cause damage to the uterus. Women should not sleep in a fixed position for a long time. First of all, the most unfavorable sleeping position for women’s breasts is the prone sleeping position. For developing girls, this position also affects the development of the thorax and breasts, so try to avoid it. Secondly, sleeping on your back for long periods of time can have a negative impact on your uterus. Sleeping on your back can lead to a posterior uterus, and if a pregnant woman sleeps on her back for a long period of time, the increased weight of the uterus can compress the inferior vena cava, affecting the return of blood from the inferior vena cava. A suitable sleeping position for women is the natural side-lying position. Wang Jing emphasized that even the right side lying position, if the posture remains unchanged for a long time, it will adversely affect the shoulder joint, so pay attention to change the sleeping position during sleep.