Exercise Ball Alternating Arm Ups

Lie face down on an exercise ball. Extend your arms straight in front of you, palms facing down. Lift one arm up towards your head, while keeping the other arm extended on the ball. Lower the lifted arm back down, and then lift the other arm up. Alternate lifting each arm up while maintaining balance on the exercise ball. Repeat for the desired number of repetitions.

How to perform the Exercise Ball Alternating Arm Ups

  1. Set up. Set up in a stable, balanced starting position appropriate for the Exercise Ball Alternating Arm Ups using your stability ball.
  2. Brace and execute. Brace your core, control the descent, and move through a full pain-free range of motion while emphasizing your abdominals.
  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 abdominals 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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