Jack Plank on Medicine Ball

The Jack Plank on Medicine Ball combines core stability with dynamic movement. You engage your core while performing a jumping jack motion from a plank position.

  1. Start in a plank position with your hands on the medicine ball.
  2. Jump your feet out to the sides while maintaining the plank.
  3. Jump your feet back to the center and repeat.

How to perform the Jack Plank on Medicine Ball

  1. Set up. Set up in a stable, balanced starting position appropriate for the Jack Plank on Medicine Ball using your medicine 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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