Some people will sleep through alarms, turning them off without remembering it.
But more importantly, if your sleep schedule is shifted you might not actually be able to fall asleep when you need to, even if you haven't had enough sleep. After a few days you will be exhausted, fall asleep in the afternoon and take a nice 4 hour nap, leaving you unable to fall asleep until very late, after which the cycle continues.
But more importantly, if your sleep schedule is shifted you might not actually be able to fall asleep when you need to, even if you haven't had enough sleep. After a few days you will be exhausted, fall asleep in the afternoon and take a nice 4 hour nap, leaving you unable to fall asleep until very late, after which the cycle continues.