Now I'm going to demonstrate how to do an Ab reverse curl. So you are going to lie down, hands flat on the floor, lift the legs, okay. And you are going to just bring the knees slightly into your mid-section, so you are hitting the lower abdominals here, taking the lower back just slightly off the mat, taking the hips just slightly off the mat, okay. You want to extend your legs out, just to make it a little more challenging if you can, so this would be level one version. Level two would be straightening your legs, and kind of coming straight up with it, okay. So this is a little bit more challenging in the mid-section, so in the lower abdominals, okay you're going to have to lift a little stronger spine, a little more core strength here, okay. So this would be level two version of the ab reverse curl. Okay, high repetitions, okay, two variations, level one, level two, of the ab reverse curl.