another excercise i like is where you make your hand in a fist, palm up. then you roll out your index and middle fingers. then roll them back in and while theyr coming in roll out you ring and pinky. then keep going back and forth like that. its even harder when you roll out your index and ring, then your middle and pinky. it gets tiring pretty fast.
Dad always thought laughter was the best medicine, which I guess was why several of us died of tuberculosis.