Performing the: A Step-by-Step Tutorial Dumbbell Pullover on Exercise Ball
Slowly walk your feet forward, allowing the ball to roll under your body until it supports your upper back and shoulders, keeping your hips lifted so your body forms a straight line from knees to shoulders.
Hold the dumbbell with both hands above your chest, arms fully extended, but don't lock your elbows.
Lower the dumbbell in an arc behind your head, keeping your arms straight, until they are level with your body.
Raise the dumbbell back to the starting position above your chest, again in an arc, to complete one rep.