- 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.
- Roll the ball to the right hand and do another push-up. This completes one rep.
If you don't feel your abs when you do push-ups, try this variation.