According to Xinhua Dictionary, staying up late means "staying up all night or staying up late for something". This seems that the answer can't be unified, and it varies from person to person. Scientific research has found that everyone has his own circadian rhythm, which is what we often call the "biological clock". This is determined by the PER3 gene in the body. Some people are early birds (go to bed early and get up early), while others are born night owls (go to bed late and get up late).
The essence of staying up late is partial sleep deprivation: neither enough sleep time is reached, nor is it related to the start time of sleep.
The popular "eight-hour sleep theory" has no scientific basis, because there are differences in personal physique: some people sleep 4-6 hours a day, while others sleep 10 hours and are still sleepy. This means that as long as you get enough sleep, there is no problem of staying up late in theory. Therefore, if you can ensure that you sleep regularly and get enough sleep, even if you go to bed early every morning and get up at noon, it is not staying up late.
The circadian rhythm of ordinary people is hard to be unaffected by light, temperature and social rhythm.
Imagine that you go to bed at six every morning and wake up at twelve noon. You have a regular work schedule and get enough sleep, but it's hard for your rest time not to be affected by busy neighbors, plenty of light and noisy cities.
Sleep time and regularity are guaranteed, but the quality of rest will be greatly reduced. Problems in daily life may also affect your diet and exercise. The city won't wait for you to open your eyes, and the alarm clock won't go off until you have a full sleep. Therefore, the problem of staying up late and being forced to get up early can be imagined.
A good sleep is more important than anything else!
For different individuals, the reasons for staying up late are different: work, study, revenge staying up late, simple difficulty sleeping ... Especially for the "revenge staying up late" group, they all work and study during the day, and finally have free time after dragging their tired bodies home.
Of course, we should also be kind to ourselves, enjoy playing games, playing dramas, eating a delicious midnight snack and letting ourselves fly in the middle of the night. This kind of mood is understandable, but in the long run, it is easy to fall into a vicious circle-staying up at night, being sleepy to death during the day, and reducing efficiency. What should be done during the day is put off until the evening. In the end, habitual staying up late is harmful to physical and mental health. So it is really necessary to get rid of the habit of staying up late and have a good sleep on time.
Is there any way to help us improve our sleep?
For modern people, the most important thing is to stay away from electronic products such as mobile phones before going to bed.