If people lie down for a long time, the body is very harmful. 1, often lying does not exercise significantly reduce the peristaltic function of the gastrointestinal tract, in the long run will cause the digestion and absorption of food dysfunction, there will be nausea, vomiting, acid reflux, heartburn, abdominal distension, serious will cause constipation and other digestive system hazards. 2, the circulatory system caused great harm, such as the emergence of coronary atherosclerotic heart disease 3, the pressure on the sacroiliac joint to form local and hip behind the decubitus ulcer, will lead to muscle atrophy, muscle contracture, all belong to the long-term lying without exercise hazards.