● Modern media constantly publicize that it is best to sleep from 22: 00 to 23: 00. The reason is: 12: 00 to 3: 00 pm is a deep sleep period. As long as you sleep well for three hours, you will be full of energy all day. If you miss it, it will have a very bad effect on your body. It usually takes 30-60 minutes from falling asleep to entering deep sleep, so it is best to sleep at 10: 00- 10: 30 at night.

However, such "observation" is relatively "one-sided". This is because the "observer" observes on the premise of "sleeping at night".

So what is the "fact"? Let's take a look at the "reality": workers who work at night in cities, especially "night drivers", all work at night and sleep in the morning. If the above findings are correct, then all those who work at night will die, or at least be infected with various "diseases". However, they are all alive and well, which is the best evidence.

And the difference between "day" and "night" is really small in modern society, because if you fly to "America" at night in China, but it is "day" there, will we sleep or not? And we all have "electric lights" and spend most of our time indoors.

So what is the body's default "biological clock"? How can we achieve the "optimal distribution" of "work" and "rest" time?

You only need to do a small experiment to know that when you watch a soap opera all night, you will start to "sleep" at 6 am, and finally you will "wake up" naturally from 12 to 14 in the afternoon. At this time, just count the sleep time and you will know that it is exactly 6-8 hours. Do you think it was an accident? Why doesn't it follow your long-standing 7-9 "get up" time?

● That is to say, the default "sleep time" of "biological clock" is "wake up" 6-8 hours after sleep; And when to "sleep" is not the most important. As long as you "sleep", those "physiological activities" that will happen after sleeping will still be carried out, or: as long as you have enough "sleep time", no matter when you start sleeping, it will not affect your "health"; "Work and rest time" is just a "habit" and can be changed at will. Of course, it takes some time to form a new habit, usually 3-6 days, so it is best not to alternate this habit too often.

Only in this way can everyone "feel at ease" to carry out all kinds of "overtime" or "night shift" activities, otherwise there will always be certain "psychological obstacles", which is not good.

● Excerpted from The Complete Works of Civilization X Files.

[Edit this paragraph] Other judgments about the best sleep time

General sleep time:

1. Normal people sleep for 8- 10 hours.

2. The time for beauty sleep is 10- 2 am.

3. Stay up late for a long time ... Even if you sleep for 8 hours, you will be prone to endocrine disorders in a few years and your biological clock will go wrong.

Children had better go to bed before 8: 30 in the evening, because they need biological clocks when they grow up.

Teenagers should go to bed around 10:00 at night.

6. As for people who love beauty, they should go to bed before 2:00 a.m. (preferably before 65438+ 02:00 midnight) because the skin is metabolized before 2:00 a.m..

7. Old people should sleep between 9: 00- 10: 00 in the evening.

Also: you must go to bed at 12:00 at night. Everyone has a physiological clock in his body, which shoulders different physiological tasks at different times. Don't ignore it easily!

The biological clock says:

1.00: 00-0 1: 00 shallow sleep period-dreamy and sensitive, people who are unwell are likely to wake up at this time.

2.0 1: 00-02: 00 Detoxification period-At this time, the liver is actively eliminating toxins, so it is necessary to put the body to sleep before the liver can complete the function of metabolizing waste.

3.03: 00-04: 00 Hibernation period-the most vulnerable moment for critically ill patients, and patients often die at this time. It is best not to stay up late beyond this time.

4.09: 00- 1 1: 00 essence period-this is the best time for attention and memory, and also the best time for work and study.

5. 12: 00- 13: 00 lunch break-it is best to sit still or close your eyes before eating. Don't drink at noon, it's easy to get drunk and hurt your liver!

6. The peak period 14:00- 15:00- is the time when analytical power and creativity can be brought into full play!

7. 16: 00- 17: 00 low tide-the stage of weak physical consumption, it is best to supplement fruits to relieve hunger and avoid overeating leading to obesity.

8. 17: 00- 18: 00 relaxation period-at this time, blood sugar rises slightly, and the sense of smell and taste is the most sensitive. Dinner should be prepared to boost your spirits.

9. 19:00-20:00- It is best to take a walk or take a bath 30 minutes after meals to relax and relieve the fatigue of the day.

10.20: 00-22: 00-this is the peak time of evening activities, so I suggest you make good use of this time to discuss, study and other activities that need careful consideration.

1 1.23: 00-24: 00 Night sleep period-after a busy day in the city, you should relax and fall asleep at this time. Don't overload your body, it's not worth the loss!