Bent-knee Lying Twist (On Stability Ball)

Perform the bent-knee lying twist on a stability ball to engage your core and improve rotational strength.

  1. Lie back on the stability ball with your knees bent and feet flat on the floor.
  2. Extend your arms out to the sides for balance.
  3. Rotate your torso to one side, keeping your hips stable.
  4. Return to the center and rotate to the opposite side.

How to perform the Bent-knee Lying Twist (On Stability Ball)

  1. Set up. Set up in a stable, balanced starting position appropriate for the Bent-knee Lying Twist (On Stability Ball) 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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