I try to come up with legitimate reasons to avoid to bed. It's 3:42 for me as I write this, and my reasons for not going to bed are as follows:
1. Huge essay for Intro to Literature is due the third at noon, and I haven't started. Maybe if I don't sleep the third will never come!
2. Another huge essay is due on the fifth, and I don't want that day to come any closer. If I go to sleep, I'll be seven to eight hours closer! Fear!!
3. I just joined the forums, so I need to look around. Of course, I could do this whenever, but there's no time like the present!