Abs Exercises

Swiss Ball Jackknife

The Swiss ball jackknife is a core stabilizing exercise that improves balance, strength, and flexibility throughout the hip and abdominal region.

Instructions

Get into a pushup position with hands on the ground shoulder-width apart and shins resting on a Swiss ball. Brace core. Form a straight line from your shoulders to your feet.
Roll the ball inward bending the legs and pulling it with your feet until your thighs touch your stomach. Roll the ball back to the starting position.