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
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.
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