All right, today we’re going to review a stability ball hamstring curl. What we’re going to do with the stability ball to start this one off is we’re going to place it right under our heels. Laying back on the floor, you can just relax the arms to the side, they don’t have to be anything special. From here, we’re going to lift the hips into the air. You’re going to need to press down into the heels as you curl the ball back towards you. Squeeze at the top, and then lower slow. Pull it back, squeeze and lower slow. Again, here we’re working the hamstrings, the glutes and a little bit through the low back. Those muscle groups together are called our posterior chain. And that’s our stability ball hamstring curl.