So, you know when you have those indents from your pillow or sleeve on your face/arms after a quick nap? Why are they there after a nap, but never when you sleep a long while?
In: Biology
I would venture a guess that it is more about water retention. If you nap after a meat, you have only been digesting for an hour. If you sleep 8 hours after a meal, you should have digested an normaled out.
The retention itself is usually from salt and sugar in the blood, pulling water into the blood with it and into the tissues around the face, causing puffiness that holds wrinkles when pressed.
Water retention and puffiness after a long sleep could possibly imply high blood pressure.
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