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SUPRACHIASMATIC NUCLEUs
If you work in an occupation where it is difficult to maintain a certain routine, such as an unemployed person or a freelancer, it will be very common for the day and night to change.
In particular, it goes beyond just sleeping during the day and waking up at night, and every 1-2 weeks, as if doing a double shift, sometimes sleeping during the day and sometimes sleeping at night, it drives people very crazy.
Have you ever wondered what the cause is? It’s because of the sunlight
Our eyes act as a biological clock that recognizes the change between day and night by seeing light.
This biological clock basically recognizes 24.5 hours as a day. So, every day, sleep time is pushed back by 30 minutes, resulting in day and night changes.
To correct this, two things are needed: seeing the sunlight when you wake up in the morning, and seeing the sunset when it sets in the evening.
When you see sunlight in the morning, your body releases an awakening hormone (sertonin), and when you sleep, this serotonin changes into a hormone that induces good sleep (melatonin).
And when you see the sunset, your biological clock moves forward by several tens of minutes. In other words, it corrects the day to 24 hours instead of 24.5 hours to our body and prevents us from going to bed later each day.
If you regulate your biological clock like this, after the sun goes down, you’ll be shocked to hear, “Wow, I’m so sleepy?” You may feel drowsy. Let’s all live a healthy sleep life