Superset 2, Exercise 2: One-Arm Med-Ball Push-Up Start in a plank position with your left hand on a medicine ball. Keeping your torso square to the floor, perform a push-up by bending and straightening both arms. If a traditional push-up is too challenging, lower your knees to the floor. This completes one rep. Perform 12 reps total and then rest for one minute. Advance to single-arm chest press. Image Source: POPSUGAR Photography / Kat Borchart