Sit on the floor about 1–2 feet away from your partner with your knees bent. Sit upright with perfect posture, abdominals contracted tightly throughout the entire exercise. Start by holding the medicine ball into your chest. Now you and your partner recline back a few inches while maintaining perfect posture. Hold that position as you both rotate one way and then the other. Return to the starting position and, once you’re upright, throw the ball to your partner. Your partner will catch it, and you’ll both repeat the exercise. Repeat for 30–90 seconds.
Variations: Try facing the same direction and tossing the ball laterally to your partner.
Start by standing tall with perfect posture, facing your partner. Lunge forward as you throw the medicine ball to your partner using a chest pass. Your partner will catch the ball while performing a backward lunge. Repeat, lunging forward and backward. Remember to push off the front leg and be sure that your front knee stays over your front foot while lunging. Continue for 30–60 seconds each side.