1, emphasizing the regularity of work and rest time, adults sleep for 8 hours once a day, and it should be a fixed time.

2. "Going to bed early" is for "getting up early". From 5 am to 6 am, the air quality is better. If you have the habit of exercising in the morning, it will be good for your health. At the same time, there is little noise in the morning, which is suitable for study.

3. "Going to bed early" is a relative concept. Go to bed after eating at night 19, but going to bed early is not good for your health.

To sum up, it is better to go to bed early and get up early.