I read somewhere, several years ago, that for most people, getting up after less than 3 hours of sleep is fairly easy, and getting up after more than 6 hours of sleep is fairly easy, but getting up after more three but less than six hours of sleep is very hard—the model was something along the lines of ‘after three hours of sleep, human brains assume that there’s time for a full night’s worth of sleep rather than just a nap’.
I don’t have any references, nor any significant amount of evidence that this is the case (though it seems to work for me), but the idea that if you get more than X amount of sleep you need to get X+Y amount of sleep in order to wake up easily seems like a potentially useful theory at least.
I read somewhere, several years ago, that for most people, getting up after less than 3 hours of sleep is fairly easy, and getting up after more than 6 hours of sleep is fairly easy, but getting up after more three but less than six hours of sleep is very hard—the model was something along the lines of ‘after three hours of sleep, human brains assume that there’s time for a full night’s worth of sleep rather than just a nap’.
I don’t have any references, nor any significant amount of evidence that this is the case (though it seems to work for me), but the idea that if you get more than X amount of sleep you need to get X+Y amount of sleep in order to wake up easily seems like a potentially useful theory at least.