Chest Exercise · Cable

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Cable One Arm Fly On Exercise Ball

Doing a one-arm fly on a stability ball layers two challenges on top of each other — unilateral chest work and balance — since the ball offers no fixed support and the uneven load from one arm pulls the body off-center. It demands real core and hip control just to stay on the ball, on top of the usual chest stretch. This is closer to a functional training exercise than a straightforward mass-builder.

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Category

Chest

Equipment

Cable

Target

Pectorals

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Exercise reference published by PlanWorkouts; see our editorial standards.

How to Do the Cable One Arm Fly On Exercise Ball

1. Sit on an exercise ball with your feet flat on the ground and your back straight.
2. Hold a cable handle in one hand and extend your arm out to the side, parallel to the ground.
3. Keep your elbow slightly bent and your palm facing forward.
4. Slowly bring your arm across your body, squeezing your chest muscles.
5. Pause briefly at the end of the movement, then slowly return to the starting position.
6. Repeat for the desired number of repetitions, then switch sides.

Technique & Form Tips

Move your arms in a controlled arc toward the front of your body, focusing on horizontal adduction. Follow the demonstrated elbow angle and body support, ensuring your range of motion remains within your personal comfortable limits.

Common Mistakes to Avoid

• Turning fly into a press: Keep the demonstrated elbow bend instead of repeatedly bending and straightening the elbows to press the load.
• Overstretching: Limit the backward movement of your arms to a range that feels stable and comfortable.
• Rushing the contraction: Use a controlled tempo through the entire range, especially as your hands move toward the center.

How to Breathe During This Exercise

Coordinate your breath with the opening and closing phases of the movement.

Comfort and Control

Choose a load and range you can control. Stop if the movement causes pain. If discomfort persists, stop and ask a qualified professional about an appropriate exercise and range.

General guidance: Mayo Clinic on weight-training technique. Follow the specific movement steps above for this variation.

Muscles Worked

The Cable One Arm Fly On Exercise Ball mainly targets your Pectorals, with your Deltoids helping support the movement, along with your Triceps.

More Chest Exercises

Archer Push Up Body Weight · Pectorals Assisted Chest Dip (kneeling) Leverage Machine · Pectorals Assisted Seated Pectoralis Major Stretch With Stability Ball Assisted · Pectorals Assisted Wide-Grip Chest Dip (kneeling) Leverage Machine · Pectorals Band Bench Press Band · Pectorals Band One Arm Twisting Chest Press Band · Pectorals

More Pectorals Exercises

Barbell Bench Press Barbell · Pectorals Barbell Decline Bench Press Barbell · Pectorals Barbell Decline Pullover Barbell · Pectorals Barbell Decline Wide-Grip Press Barbell · Pectorals Barbell Front Raise And Pullover Barbell · Pectorals Barbell Guillotine Bench Press Barbell · Pectorals

Equipment Alternatives

Don't have cable? These target the same pectorals with different equipment.

Dumbbell Decline Fly Dumbbell · Pectorals Floor Fly (with Barbell) Barbell · Pectorals Lever Seated Fly Leverage Machine · Pectorals

FAQ

What muscles does the Cable One Arm Fly On Exercise Ball work?

The Cable One Arm Fly On Exercise Ball mainly works your pectorals. It also helps strengthen your deltoids and triceps. Using good, smooth form makes sure you work the right muscles and avoid unnecessary strain on your joints.

What equipment do I need for the Cable One Arm Fly On Exercise Ball?

You do the Cable One Arm Fly On Exercise Ball with a cable. Make sure your equipment is set up safely before starting. If you work out at home or have limited gear, check out our alternative exercises below.

What form mistake should I watch for on the Cable One Arm Fly On Exercise Ball?

One mistake to watch for is turning fly into a press: Keep the demonstrated elbow bend instead of repeatedly bending and straightening the elbows to press the load.. Use a comfortable range and a controlled return; reduce the load if you cannot maintain the demonstrated setup.

How many sets and reps should I perform on the Cable One Arm Fly On Exercise Ball?

To tone and grow muscle, do 3 to 4 sets of 10 to 15 smooth reps with 60 seconds of rest, focusing on a full stretch and squeezing the muscle at the top of each rep.

What's a good alternative to the Cable One Arm Fly On Exercise Ball?

The Dumbbell Decline Fly trains your pectorals with dumbbell and a similar movement pattern. Review its form guide before substituting it, since setup and range of motion can differ.