Kruncher The Ultimate Ab MachineThe Kruncher is a portable workout device with a patented hinge device that gives it 3 levels of resistance. Its wide U shaped base and extension arms are padded so it can be used around your neck, on your lap, in a chair, or on the floor as you work your midsection. Use it on your upper or lower abs, do hip flexors or obliques depending on your position. As your strength increases, you can adjust to a higher setting for a greater workout. The device