Start with your back turned to a partner. Stand about two arms lengths away. On your partner's call, he/she will drop the goofball. Turn around, react to the ball and try to catch it as it bounces or run it down if it bounces away. Perform 2 to 3 sets of 10 drop and catches. The walk back to the starting position is the only rest between reps, but take enough time for full recovery between sets.