Dumbbell One Arm Hammer Press On Exercise Ball

Sit on an exercise ball with a dumbbell in one hand. Hold the dumbbell with your palm facing inward (hammer grip). Extend your arm straight up towards the ceiling. Lower the dumbbell towards your shoulder while keeping your elbow at a 90-degree angle. Press the dumbbell back up to the starting position, fully extending your arm. Repeat the exercise for the desired number of repetitions.

How to perform the Dumbbell One Arm Hammer Press On Exercise Ball

  1. Set up. Set up in a stable, balanced starting position appropriate for the Dumbbell One Arm Hammer Press 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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