How To: Do knee tucks on a swiss ball

Do knee tucks on a swiss ball

How to Do knee tucks on a swiss ball

The Knee Tuck or Jackknife is a challenging exercise that works your body from head to toe. The exercise is somewhat similar to Rollouts, requiring your lower abdominals to contract isometrically, stabilizing your spine.

Be the First to Comment

Share Your Thoughts

  • Hot
  • Latest