It's almost 3am, and I am still awake. Why? I don't know. I'm tired, I'm willing to sleep, yet here I am, doing a whole lot of nothing on the computer. I do this regularly - in cycles where I got to bed early, then get progressively later and later until I end up going to bed earlier again to start catching up on the sleep I lost. Why do I do this? It makes no sense, and I am unable to reason myself through it.