Sleep Cycles

I have to start work at 8 am every morning. I'm not sure exactly who decided that scientists should start early, but it seems to be a universal assumption. Throughout college my science classes were always first thing, and research efforts often seem to involve early morning work. But I've never really been a morning person. Last night is a great example: I had to clean up the house in preparation for Barry's brother coming to stay with us (which, with a dog and a cat and two messy people, is no small feat). We started when we got home and tackled room after room. As I looked up at the clock…