Hat, I've got a serious question: have you always been like this, or was this something you deliberately trained yourself to do?
I ask this as an insomniac-my-whole-life father of a two-year-old who still doesn't sleep through the night very well. I've often thought that if I could somehow just learn to get by with less sleep, my entire life would be better. I wouldn't be walking through a fog for the first three hours of every single day. But that's always just seemed akin to wanting to jump out of the window and fly. If you made a conscious effort to make yourself get by on so little sleep -- as I've read that Bill Clinton apparently did, for example -- I'd be really interested to hear how you went about it.