Dumbbell One Arm Chest Fly On Exercise Ball

Lie face up on an exercise ball. Hold a dumbbell in one hand over your chest, with your arm extended and parallel to the ground. Slowly lower your arm out to the side, maintaining a slight bend in the elbow. Return your arm back to the starting position, keeping tension in your chest muscles. Repeat with the opposite arm.

How to perform the Dumbbell One Arm Chest Fly On Exercise Ball

  1. Set up. Set up in a stable, balanced starting position appropriate for the Dumbbell One Arm Chest Fly On Exercise Ball using your dumbbell.
  2. Brace and execute. Brace your core, control the descent, and move through a full pain-free range of motion while emphasizing your pectoralis major.
  3. Reset. Reverse the movement under control and reset between repetitions, keeping your form crisp on every rep.

Coaching cues

  • Move with intent — every rep should feel deliberate, not rushed.
  • Drive force through your pectoralis major rather than momentum.
  • Keep your breathing steady: exhale on the hard part, inhale on the reset.

Common mistakes

  • Using too much weight and losing positional control.
  • Cutting the range of motion short and missing the target muscle.
  • Letting your spine round or hyperextend instead of staying neutral.

Detailed cues, common mistakes, and demonstration video are available in the Fitly app.

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