Five hours of sleep a day is not enough; the recommended amount of sleep for a normal adult day is 7-9 hours. The circadian rhythm of the human body, which is active during the day and resting at night, is closely related to human health and can affect the endocrine level of the human body. If you do not get enough sleep, it will lead to imbalance of the endocrine system and disturbance of circadian rhythm after a long time, which will easily cause a series of chronic diseases, affecting patients’ blood pressure, blood sugar, blood lipids and mental condition, easily leading to anxiety and depression, and increasing the incidence of cardiovascular and cerebrovascular diseases among elderly patients. Sleep time should not be too long, less than 7 hours or more than 9 hours, according to current studies, are not good for the health of patients.