It's so common, nowadays. I see people of my age (i am 17) waking up at 10 or 11 in the morning because supposedly, they studied all through the night. Like, it's pretty great if you actually study and utilize that time because ruining your biological clock, in turn, ruins everything else. read more
You may get eight or nine hours of sleep a night but will not feel well rested if the quality of your sleep was poor. 2 Turn off all electronics and distractions a few hours before bed. read more