Quite often I am more alert and can concentrate better with 5 hours of sleep compared to sleeping extra with 9-10 hours of sleep. Is there a biological reason behind why oversleeping can cause you to be more tired?
boshiej: i think it’s to do with your sleep cycle. when you sleep, you go into a deep sleep and a light sleep multiple times during the night and when you wake up feeling energetic it is just because you woke up during a light sleep phase, as opposed to feeling very tired from waking up in the middle of a deep sleep phase.
GuntherBump: Sleepbot is an Android app that when used properly wakes you up in a set window of light sleep. It’s also pretty neat since it records any sleep talking if you’re prone to that, that is if you want it to.
Link for interested: