A compound leg and core exercise, the stability ball jackknife targets your iliopsoas (hip flexors). Your abs contract dynamically only with waist flexion.
Tag: stability ball
The stability ball push-up doesn't build mass; however, it does recruit more stabilizers and provide a better functional and core workout than the push-up.
Target your internal and external obliques, improve your spinal flexibility, and strengthen the lateral flexion of your spine with the stability ball side bend.
The stability ball leg extension crunch combines an isolation push exercise (leg extension) with an isolation pull exercise (crunch) to produce a rare compound...
The stability ball decline push-up targets your upper pectoralis major. The unstable surface of the ball forces the recruitment of more stabilizer muscles.