Ball Leg Curls
I have used ball legs curls for years and on every type of client. This exercise is great to work the calves, hamstrings, and core, including the glutes. Make sure that you don’t raise the body too much up off the ground. I have seen this done with the body elevated using the shoulders. Make the core work harder!
Notice the placement of her feet. The further down the leg you place the stability ball, the more challenging the exercise is. If you are a beginner, place the ball under your calves (lower leg). Form is more important than how fast or how many you preform. A couple sets of 10 reps should do the trick!