Actually, I do not have an internal clock, but my cats do. It doesn't matter to them that I do not have to go to work; they are going to wake me up at 6:30 AM anyway. I think they think that they are the last line of defense from me oversleeping for work, which is probably true. I've gotten used to being awoken with the cats running around on the bed. They aren't all that bad, though. They can be really sweet sometimes.
