Using a 7- to 15-pound medicine ball, stand, kneel, or sit facing your partner. Hold the ball chest high with hands slightly behind the ball and arms flexed. Your partner anticipates the catch with arms extended horizontally at the chest.
Push the ball rapidly outward, extending arms to full length. Your partner checks the momentum of the ball and, before fully collapsing the arms, pushes outward in the opposite direction, passing it back with a full follow-through. Repeat the sequence back and forth in catch fashion.