Is it really good for young people to go to bed early and get up early, such as going to bed at 9 pm and getting up at 5 am?

Going to bed early and getting up early is definitely good for your health, but going to bed early and getting up early also has scientific time and measurement. For example, the reasonable time is 10 pm, 7 am or 6 am. It doesn't mean that the sooner the better, the sooner the better. In fact, it is particularly important to grasp each time period. It is right to go to bed early and get up early, which is good for your health, because it can effectively avoid staying up late.