I try to keep the martial arts up. It's a good thing, not just physically but also for your mind.
I know what its like to direct. You become a more considerate actor. After you have directed, you understand what is going on. You can't help but think of the material as a director. You do come up with suggestions. You come up with shortcuts that you weren't aware of before. You try to be helpful to the director if he has a lot on his hands.