When does the person sleep the healthiest?

It is best to go to bed before 22 o'clock at night, not later than 23 o'clock. If it exceeds 23 o'clock, the following will happen. First, the risk of sudden death increases. Second, the risk of cancer is rising. Third, it is easy to cause high blood pressure. Fourth, it is easy to lead to Alzheimer's disease in the elderly in advance. Fifth, it is easy to lead to an increase in the incidence of cardiovascular and cerebrovascular diseases. So it is best to sleep at night according to different age groups.