Rhythm of sleep

Sleep has a rhythm.
I think many people have heard this story.

Have you ever been woken up by a fall asleep and didn't notice it at all?
I have lived for many years 24 hours a day, 7 days a week, with contact from the hospital.
Even if I called in the middle of the night, I was answering immediately,
I once didn't realize that the phone rang.
It was about 30 minutes - 1 hour when I fell asleep.

I woke up because I was called about 10 times.
Why?? When I fell asleep and saw the phone, it was a missed call.

At the beginning of sleep, you go into a deep sleep.
After that, it became shallow little by little, rem sleep, it is time to dream.
Then repeat the cycle of going deeper again.

This first cycle is about 90 minutes, and before it gets shorter and shorter, it takes about 60 minutes.

People who wake up many times in the middle of the night and go to the bathroom
It seems that it is often woken up in this cycle roughly.

There are quite a few cases where you wake up because your body hurts when you turn over.

This cyclical rhythm.
With age, you may not be able to sleep deeply.

I hear quite a few stories that I don't feel like I've slept at all because I'm just dreaming.
This is also because sleep is shallow.

I talked about melatonin in the last blog
The quality of light and sleep is related.

Soak up the light firmly during the day and move your body in moderation.
Before going to bed at night, spend a little dimly.

You have to be ready to go to bed.
There are actually many people who are getting up forcibly even though their bodies are already ready to sleep.
There may be many people who fall asleep the moment they turn off the TV.