If you haven't slept so well last night for some reason, you may feel a little tired when you read this article. This is understandable. You might think that this balance could be corrected just by doing the so-called "eight hours" sleep in the next few nights.

In a way, this is the truth. You will learn more about why I am speaking "to some extent" at some point.

But you may also be someone from

No from

 Last night, the night before and the night before, eight hours, but for some reason, you think you didn't fire on all the cylinders. This is also understandable, you will find out why.

Not all sleep is equal

We may think that all sleep is equal. but it is not the truth. The quality of sleep varies from one part of the night to another. Our bodies have a natural rhythm for them, and this rhythm has been around for thousands of years. It is called a from

circadian rhythm.

It is the rhythm of nature and the rhythm of animal instincts. We are animals in nature and are designed to live on this natural rhythm cycle.

This cycle can be seen in the passing of the day and the passage of the season. The dawn of the day we woke up [spring]. Then, when we were most comfortable with the work, we entered the main part of the day [summer]. Then at the end of the day [autumn] and finally at night [winter].

Therefore, when the sun goes down, we will naturally wake up when the sun rises. When we adjust our lifestyle to adapt to this natural rhythm, we have better sleep quality.

Our natural sleep cycle

Similar to this natural rhythm cycle, our sleep pattern also has a natural circulation. When we sleep, we oscillate between deep regenerative sleep [physical self-healing] and a slightly mild REM [rapid eye movement] sleep state.

These sleep cycles last for about 90 minutes each. So if you find that your sleep time is up to 8 hours and you are still tired when you wake up, you might set the alarm to wake you up during the sleep cycle instead of at the end of sleep.

For example, if you go to bed at 11pm and wake up at 8am, you will sleep for 9 hours and go through 6 full sleep cycles. These will be:

Cycle 1. 11pm to 12:30pm

Cycle 2. 12:30 am to 2:00 am

Cycle 3. From 2 am to 3:30 am

Cycle 4. 3.30 am-5.00 am

Cycle 5. 5 am to 6:30 am

Cycle 6. 6:30 am to 8:00 am

Sleeping from 11pm to 8am, you may feel refreshed when you wake up.

However, if you set the alarm to wake you up at 7am, you will have 8 hours of sleep, but will wake up during the 90-minute sleep cycle [between 6.30 and 8.00]. So if you wake up at 8 in the morning, you may not be as refreshing as you are when you wake up.

Repair and revival

In addition to these shorter, 90-minute cycles, according to our circadian rhythm, the body regenerates and rejuvenates most significantly between 10 pm and 2 am.

Therefore, you may sleep at 1 am and then sleep until 9 am to get 8 hours, but you will lose every three hours of physical repair time every night. If you work in shift mode, especially night shifts, you may completely abandon your circadian rhythm, otherwise you may be able to fully repair your body during sleep.

3 top sleep tips

So, in order to better improve performance, productivity, and subsequent life outcomes, consider the following three tips:

1. Let your lifestyle fit your natural circadian rhythm and go to bed before 10pm

2. Make sure you have 8 hours or more of sleep per night

3. Try not to wake up the alarm clock. If necessary, set it up so that you wake up at the end of the 90-minute sleep cycle instead of in the middle of it

Sleeping – this is not much, but when was originally published on Spring