Dumbbell One Leg Fly On Exercise Ball

Begin by lying face down on an exercise ball with your core engaged. Hold a dumbbell in one hand. Extend your arm straight towards the floor, palm facing down. Simultaneously, lift the opposite leg off the ground, keeping it straight. Maintain a slight bend in the supporting arm and a slight arch in your lower back. Exhale as you slowly lift your arm and leg towards the ceiling, creating a 'fly' motion. Inhale as you lower your arm and leg back down to the starting position. Repeat for the desired number of repetitions, then switch sides and repeat with the other arm and leg.

How to perform the Dumbbell One Leg Fly On Exercise Ball

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

Build a free routine

Stage exercises here, then sign up to save them as a real Fitly routine — synced to web and mobile.

View staged routine (0)

Related exercises

0 exercises staged Save your routine — sign up free.