why is being overtired a thing? why isn’t the body grateful for the extra sleep?
In: Biology
Your tiredness has 3 elements.
Your body produces a chemical when you are awake. It determines by how much of that chemical how long you have been awake and if you should be tired. Coffee prevents you from detecting the chemical.
Your body measures light and makes you more awake when it is light and more tired when it is dark. So you naturally sleep at night.
Sleep is a cycle, not all sleep is the same. The ease with which you wake up and how you feel when you wake up depends on where you are in the cycle.
It takes about 15 minutes before you get into deep sleep and you come out of deep sleep after about 90 minutes.
So if you wake up in the middle of a cycle you wake up groggy even if you don’t need more sleep.
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