Instructions
Carefully sit on a stability ball while holding a pair of dumbbells.
Slowly walk your legs forward while you lie back on the ball. Only your upper back and shoulders should be on the ball.
Keep a tight core as you bring your arms out to the sides, holding the dumbbells in a horizontal position.
Slowly, press the dumbbells straight up but do not lock out your elbow.
Pause and return to the starting point.