cable one arm incline fly on exercise ball

Sit on an exercise ball with your feet flat on the ground and your back against an incline bench.

Hold a cable handle in one hand with your arm extended and palm facing inward.

Keeping a slight bend in your elbow, slowly lower your arm out to the side until your hand is in line with your shoulder.

Pause for a moment, then squeeze your chest muscles to bring your arm back to the starting position.

Repeat for the desired number of repetitions, then switch arms.