What is this thing called morning?

I got up at 7am this morning. Voluntarily. Yeah, I don't know how that happened either, except that I went to bed at 9:30, and I guess that was all the sleep I could take. It's very odd being on a regular people schedule--eating breakfast before noon, going to the 24-hour grocery store before the deli counter closes. Weird. Wonder how long I can keep it up for?