Set up an incline bench at a 45-degree angle. Sit on an exercise ball and roll forward until your upper back is resting on the incline bench. Hold a dumbbell in each hand with your palms facing each other and your arms extended above your chest. Lower the dumbbells out to the sides in a wide arc until you feel a stretch in your chest. Pause for a moment, then squeeze your chest muscles to bring the dumbbells back to the starting position. Repeat for the desired number of repetitions.
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