Sleep is a question for universities! As the old saying goes, going to bed early and getting up early is good for your health. There is only one concept, and there is no quantification, which means nothing. The key to the quality of sleep lies in deep sleep. It can be said that only 2~3 hours of sleep is enough. Usually, : to 3: is the time for deep sleep, but you can't go into deep sleep as soon as you fall asleep. There is a transition period, usually 1~1.5 hours! In reverse, it is best to go to bed between 22: 3 and 23: to prepare for deep sleep!

when do you get up? Internationally recognized is 6:. Coupled with the change of natural seasons,

the recommended work and rest time is:

22: ~ 23: in summer-> Fall asleep from 6: to 7: -> Get up

21: 3 ~ 22: 3 in winter-> Fall asleep from 6: 3 to 7: 3->

At noon, people's alertness is declining. At this time, taking a nap is helpful to restore the spirit and is beneficial to work, study and health.

In addition, dinner should be finished two hours before going to bed, because growth hormone reaches the peak of secretion at night, and eating midnight snack will affect the secretion of growth hormone, thus affecting the growth of the body. If you are really hungry, you can eat some high protein, such as eggs, bean products and milk.

Second, how long is the best sleep time

The best sleep time for all ages is as follows:

2 hours for newborns

14-15 hours for infants

12 hours for preschool children

1 hours for pupils

9 hours for middle school students

8 hours for college students

8 hours for adults

6-7 hours for the elderly. A study made by scientists shows that if people spend too much time in bed every night, the effect is just like sleeping too little, which can cause many sleep problems. For example, people who sleep more than 8 hours and less than 7 hours every night complain that they have sleep problems. Those who sleep for 7 to 8 hours every night have fewer sleep problems. I also believe that many people have this experience: once you sleep in, you feel groggy and don't want to get up. The more you sleep, the more you get groggy. You spend the last day in a groggy, and you can't sleep at night! If you want to sleep well, you must control your time!

At the same time, we should adjust the length according to the seasons. If the nights are short in summer, we should sleep less, and if the nights are long and cold in winter, we should sleep more! Sleep 7~8 hours in summer and 8~9 hours in winter! On this basis, children will increase by 1~3 hours, while the elderly will decrease by 1~3 hours.

if it can help you, please adopt it!