For an easier version, you can also do the exercise on the seat of a stable chair or bench. The exercise targets the chest, biceps, and triceps.

1. Kneeling on floor, place hands on stability ball about shoulder distance apart, elbows slightly bent. (If you have wrist strain, place hands closer together.)

2. Slowly roll ball forward, and raise hips until you're in a full push-up position, legs extended and arms perpendicular to the floor. (To make it easier, keep forearms on the ball.) Hold 5 to 15 seconds, building to one minute.