For example, you only get 4 hours of sleep
Suday night. You are tired on Monday, but it’s not too bad. Monday night, you get your normal 8 hours. But on Tuesday you feel exhausted. Why does that happen?
In: Biology
From what I have experienced, it is related to sleep debt.
It means that if you had 5 hours of sleep but you expected to get 8, you are in debt of 3 or so hours. Those hours need to be caught up in your sleep the next day.
Another thing could be if you consume caffeine or a lot of sugar to keep your self awake. The crash that comes with it could cause you to be tired the following day.
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