Sleeping on your back is related to the usual habits of individuals, some people like to lie on their sides, some people like to lie on their backs, only a very small number of people like to sleep on their backs. Sleeping on your back is more harmful to the body, this way will lead to internal organs under pressure, so that breathing and circulation are not smooth, the reproductive system also has a certain impact. Sleeping on your back, especially young people, and children are more harmful, it is recommended that this sleep posture must be adjusted. From a health point of view, the right side of the legs flexed sleeping position is most appropriate. This time the muscles of the whole body is more relaxed, help to eliminate physical fatigue, but also will not make the heart pressure, but also help the food in the stomach to the direction of the duodenum, the right side lying position is more scientific and reasonable sleeping position.