Sit on top of a BOSU ball with your legs extended off the ground in front of you, knees slightly bent. Have a partner stand to your right and toss a med ball for you to catch near your torso. Lower the ball to your left, then toss it back to your partner. Keep your legs off the ground and maintain your balance with each catch and throw.
Reps: 10 on each side
Photo Credit: Getty Images // Thinkstock