It's 4:13am here at the moment. To be honest, i'm not exactly sure what it is that keeps me going through the night. I originally started going to bed a lot later than usual a couple of years back when I started getting into MMOs. I met a lot of American friends, one thing lead to another, and now here I am.
I suppose it is those same friends that keep me awake. I keep Skype and MSN open most of the time so I can continue talking to them until they generally go to sleep themselves. One thing that annoys me about myself is that I can never be the first to leave. I'll admit that my eyes are heavy right now, but I have my music and a bottle of Dr Pepper to keep me going. :D