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 can’t help wondering why there are still shift systems like this. Surely it would be better for there to be a night shift, early shift etc
Why do I see this same question every single day in here? While when I ask a question my thread gets removed by admin saying “this question was already asked…”, and my question was asked not yesterday, but like a year ago
After a normal sleep you are dehydrated already. Sleeping longer makes you feel tired, since dehydration makes you feel tired.
I do 2 earlies 5.45 start, 2 lates, 1500 start and then 2 night 9pm-6am. Then get 4 off. I’m ALWAYS tired.
Objects in motion tend to stay in motion. Objects at rest want to stay at rest. This has been my TED talk.
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Nobody is answering because we can’t imagine getting too much sleep. That is the truly impossible dream.
Just to elaborate on this, as people have already answered. If you wake up in the middle of a dream your head will be messed and you feel tired still. If you are awoken in the middle of a deep sleep phase you will feel very drowsy. As we alternate between sleep states, being waked up in the REM phase will do that to us, we are supposed to wake up as we leave the REM, and instead of going into deep sleep we wake up.
That’s why if you want to get very little sleep, deciding to sleep for 3 hours, you wake up and feel a mess, while sleeping 4 hours, will have you wake up and feel you got some rest and made you able to work again.
And if you usually wake up after 6 or 8 hours your body has ajdusted itself to that cycle, then when you sleep 2 hours longer, you wake up in the middle of a sleep phase.
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.
The most likely answer is that even though you slept longer you woke up in the middle of a sleep cycle.
Your body produces two chemicals related to sleep. The first is what puts you to sleep and your body gradually releases more and more of the chemical allowing you to eventually reach REM sleep. The second chemical is what wakes you up and that chemical is released slowly and if your body needs more sleep your body will release more of the first chemical so you fall back into a deep sleep. If your body thinks you had enough sleep more of the second chemical is released until you wake up naturally.
When you are sleep you will have periods where you are neither asleep or awake and in that state your body will register some stimuli (light level, a sound, temperature change, air pressure change, being touched etc)that your body will think it needs to wake up for because your body thinks it’s in danger. Now if you’re really in danger adrenaline will counter act the sleep chemical you’ll be awake but if when you regain consciousness you realize you’re not in danger you won’t have enough adrenaline or wake up chemical to counter act the fall asleep chemical so you will still feel tired.
Note: sorry I forget the exact names of the two sleep chemicals your body produces
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