How many hours of sleep does a person need in a normal day?

A person's healthy sleep time should be 6-8 hours a day. Too much sleep will affect mental and physical strength. Long-term lack of sleep, the skin will lose its bright luster and skin cells will age rapidly.

Optimal sleep time:

Because the body detoxifies regularly, lack of sleep will disrupt the whole detoxification process. According to the timetable of body detoxification, 2 1: 00-23: 00 is the detoxification of immune system; 23: 00-65438+ 0: 00 am is liver detoxification, which needs to be carried out while sleeping; 65438+ 0: 00-3: 00 am is the detoxification of large intestine; From 7 am to 9 am, the small intestine absorbs a lot of nutrients. Arrange sleep according to different detoxification steps, and you can beautify yourself during sleep.