Originally Posted by sparky

Yeah - we did similar in my karate training. The main one we did for 5 mins at the start of EVERY session was the following

start feet together - then jump to top right and bottom left - then back to middle then to top left and bottom right. Repeat untill told to stop or until you collapse

This really got your heart pumping and improved your quick feet no end. It helped for getting in stances quicker.