Adequate quality sleep is very good for the health of the body. First, good for the skin, sufficient sleep can make the skin healthy and rosy, shiny, also less prone to acne, commonly known as the beauty sleep, that is the reason. Secondly, good for gastrointestinal function, to ensure sufficient and quality sleep at night, can make the stomach get sufficient relaxation and rest, and can promote the secretion of proteins that protect the gastric mucosa, so that the stomach can reach a good state. Also very good for endocrine, can make the body’s hormone secretion level to maintain in a healthy and good state. It is also very good for cardiovascular and cerebrovascular, which can make the heart and brain get sufficient relaxation and rest, and ensure the blood supply to the heart and brain.