This exercise helps develop postural awareness and increases activity in the core musculature. The abdominals should be tensed throughout the movement with the focus on maintaining perfect posture.

Select a medicine ball for the desired resistance. Sit down on a stability ball and lift the medicine ball to a position directly overhead with elbows extended. While keeping the upper arms motionless, slowly bend at the elbows and allow the medicine ball to descend to a position directly behind the head, pause, and then return to the starting position. For variety, this exercise can also be performed with a dumbbell in each hand.