Following Proper form for Cable Rope Crunch

To avoid injury when performing this exercise, keep your knees aligned and do not allow them to flare outward. When you have lowered to the parallel position, look down to check to assure your knees are in line with your toes. In this manner, you can be sure your form is good and can be confident you have lowered correctly. Do this especially when your legs are at the 90-degree angle position.