But when I was in college, five hours of sleep and I was golden. I did, unfortunately, have to say ciao to my 8 AM Italian class since it conflicted with my *ahem* clubbing schedule. See, we were just getting in around then and 8 AM was my bed time.
Now I find myself thinking of a nap when I should be working. Or starting to drift when I'm laying by the pool or watching TV. Not that those are bad times to fall asleep, unless you've forgotten to put sunscreen on.
Are you a napper? How many hours of sleep do you need?