I can't sleep late anymore. In college I would sometimes sleep so late that I would miss the last serving of lunch in my dorm, and I'd have to wait until dinner to eat breakfast. Back then I also wouldn't be able to keep my eyes open through a chapter of my assigned reading, and I'd pretty much fall asleep anywhere I sat down for more than a few minutes. Of course, I found out a bit later I had mono, which was more of a relief than a burden. I finally had a wonderful excuse for coming to college and doing almost nothing but fall asleep. It's nice to have all that guilt wiped clean with one doctor visit.