When are you most creative?

R O Blechman, Illustrator, designer and film-maker has these comments:

"I find that ideas crystallize in off hours, off moments, when I am totally relaxed. Usually it is at the end of the day when I am totally exhausted. That is when I get my best ideas. It is probably because I have given up, and let myself off the hook. That may be why many artists work at night. You are not tight, and can play with the problem."