Question:Do you know these sleep time?

1.Most people sleep for 6-8 hours,some sleep for 10hours.

2.Beauty sleep time is 10 PM - 2 am.

3.For a long time to stay up late.Even one sleep for eight hours, a few years down he will be easy to endocrine disorders, biological clock will also go bad.

4.Children had better go to bed before 8:30 PM,

5.Teenagers had better sleep at 10:00 p.m.

6.As for one who loves beauty, should sleep before 2 o 'clock in the morning, because the skin metabolism before 2 o 'clock in the morning.

7.The old man should go to bed at 9 in the evening - between 10:00 .

And: we had better sleep before 12:00 PM, every body has a biological clock. It in a different time for different mission, don't easily ignored!

（1）mission：使命。

（2）endocrine disorder：内分泌紊乱。

（3）metabolism：新陈代谢。