The best time for humans to sleep

We need to sleep every day. Generally, we go to bed when we feel sleepy at night. Many people have not thought carefully about the best time for humans to sleep. In fact, sleep is a complicated thing. There are deep sleep and light sleep. Even if the deep sleep time is relatively short, it can make people have sufficient energy. At the same time, even if the light sleep time is relatively long, you may feel that you are not getting enough sleep. Let us take a closer look at the best time for human sleep.

1. When to sleep

There is a lot of knowledge about sleep! As the old saying goes, early to bed and early to rise makes a healthy body. But it is just a concept, without any quantification, which is equivalent to saying nothing. The key to sleep quality lies in deep sleep. It can be said that 2 to 3 hours of sleep is enough. Normally, 0 to 3 o'clock is the time for deep sleep, but you can't enter deep sleep as soon as you fall asleep. There is a transition period, which is usually 1 to 1.5 hours! In reverse, it is best to go to bed between 22:30 and 23:00 to prepare for deep sleep!

When should we get up? The internationally recognized time is 6:00.

In addition, in line with the changes of natural seasons,

The recommended working hours are:

Summer 22:00~23:00 -> Sleep 6:00~7:00 -> Wake up

Winter 21:30~22:30 -> Fall asleep 6:30~7:30 -> Wake up

At noon, the human body's alertness is at a low point. A short nap at this time can help restore energy, which is beneficial to work, study and physical health.

In addition, dinner should be finished two hours before going to bed.

Because growth hormone reaches its peak secretion period at night, eating midnight snacks will affect the secretion of growth hormone, thereby affecting body height. If you are really hungry, you can eat some high-protein foods, such as eggs, soy products and milk.

2. How long should you sleep?

The best sleep time for each age group is as follows:

Newborn 20 hours

Infants 14-15 hours

Preschoolers 12 hours

10 hours for primary school students

Middle school students: 9 hours

College students 8 hours

Adults 8 hours

6-7 hours is not good for the elderly, 7 to 8 hours is appropriate!

A study conducted 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 slept more than 8 hours and less than 7 hours per night both complained of sleep problems. Those who slept between seven and eight hours a night had fewer sleep problems. I believe many people have had this experience: sleeping in, sleeping so groggy that you don’t want to get up, sleeping more and more groggy, spending the last day in a groggy state, and then being unable to fall asleep at night! If you want to sleep well, you must control your time!

At the same time, you should adjust the length of sleep according to the season. In summer, the nights are short, so you should sleep less. In winter, the nights are long and cold, so you should sleep more! Sleep 7 to 8 hours in summer and 8 to 9 hours in winter! Young children should sleep 1 to 3 hours more on this basis, and the elderly should sleep 1 to 3 hours less.