Improve your reaction time and hand-eye coordination with the Reactionary Drops drill, a popular tool even used by F1 drivers and tennis players. Your partner holds two balls, and you position your hands, perhaps palms up. React to whatever your partner does, catching the ball when they drop either the left or right side, or both simultaneously. It may not be easy at first, but you can start with one ball at a time and then move on to being surprised by your partner.