Why is it when you sleep for 10-12 hours you end up more tired throughout the day than if you had 8 hours of sleep?
In: Biology
I think the right answer has already been given, I’m just trying to put my impression into new words. It’s not up to you “when to sleep”. There are things going on in your body which govern when you’d sleep (“circadian clocks”?). This shows in several ways. For example, often people try to find sleep, but can’t. Apparently, one of these processes has a period shorter than a full day, maybe more like 6 hours. Usually, you’d take the late part of one such period to fall asleep, and sleep through so that you’d wake up in the late part of the second period. When you oversleep, the next period has already started, you’d maybe sleep way longer and even wake up sleepy.
Basically, it’s because we’re not used to sleep when we’re tired, but when the clock says we shold be sleeping. I guess in the past, when our ancestors were still roaming savannas, when to sleep was more up to the individuals. When somebody wanted to go hunting and everybody else was asleep, they’d be on their own or stay at the camp. Additionally, having rather short and changing sleep cycles probably turned out to be an advantage. As in the teenagers being awake even late at night, and annoying the hell out of everyone and everything that was trying to disturb the sleepers.
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