I have regular sleeping patterns. Usually in to bed by 12-1am on weekdays and 1-3am on weekends depending if I go out. I can't function on no sleep, so staying up all night trying to get a paper done doesn't work.

I've stayed up over 24 hours before, but that was when I was younger. If your internal clock is messed up, the best way to reset it is just to go to sleep immediately. It's the weekend, so you'll have time to sleep.