Are you an early bird, a very late sleeper, or an irregular sleeper?
It varies. Dependent on if I have a lot on my mind. When I am flat out at work, I usually paint at ungodly hours to shut down the 'thinking' side of my brain.
I haven't painted for a little while though.
Yesterday I woke up around 9. Went to bed at 3am, and woke up at 5.30am this morning.
When all is good, I'd say I'm a natural early riser (with the weekend sleepins of course), and can stay up late. I can run on little sleep quite well or sleep for 10 hours like I did early last week.