Sleeping a lot in the clinic also belongs to a pathological condition, the normal adult daily sleep time in 6-8 hours, more than 10 hours belongs to the situation of sleeping a lot, sleeping a lot will also have a certain adverse effect on the body. Frequent sleepiness is caused by the following factors: 1, the most common factor is the lack of oxygen in the body, usually caused by ischemia and hypoxia of the large arteries, such as primary pulmonary hypertension, pulmonary insufficiency, chronic obstructive pulmonary disease, chronic obstructive pulmonary emphysema and arterial oxygen saturation caused by insufficient carbon dioxide partial pressure is too high, the partial pressure of oxygen is too low, which will cause more sleep. 2, such as ischemic heart disease, ischemic 2, such as ischemic heart disease, ischemic cardiomyopathy, cardiac arterial blood supply is incomplete will also appear in the case of increased sleep, high blood fat disease such as hyperlipidemia, high viscosity blood will also appear in the case of sleep.