Sleeping and rolling over is a normal phenomenon, but it may also be caused by poor sleep quality, chronic diseases, ischemic cerebrovascular and so on. 1. Poor sleep quality: it is usually caused by autonomic dysfunction or high pressure of work and study before bedtime. Therefore, it is difficult to enter the deep sleep stage during sleep, and the light sleep stage will show the symptom of love to roll over. 2. Chronic diseases: Some chronic diseases can lead to hypoxia and numbness. For example, chronic bronchial dilatation, chronic obstructive pulmonary disease and so on, these diseases will lead to numbness and pain. People will subconsciously appear to love to roll over during sleep. 3. Ischemic cerebrovascular: ischemic cerebrovascular is called cerebral infarction, cerebral infarction during the disease will be a series of sleep disorders, such as sleep reversal, can not sleep and so on. There are a lot of factors that lead to somnolence, if the physiological reasons have been ruled out, the patient should consult the doctor in time to clarify the cause of the disease and correct treatment.