I am usually up, and thinking about the next short story or novel. (I'm usually up by 4:00 a.m., in fact, with rare exceptions.)
I have always been a morning person. It is during the a.m. hours that I typically get my bursts of creativity and my extended periods of high productivity.
On the other hand, I am seldom any good to anyone, for anything, after about 9:00 p.m. So there is definitely a price to be paid for being a morning person.