Stand facing a cable station wearing an ankle strap attached to one leg. Attach the weight to the strap and begin by leaning forward at the waist slightly as you support yourself against the handles of the cable station. Keeping your working leg straight and support leg slightly bent, curl your foot up toward your butt. Once your shin is parallel to the floor, use your glutes to push straight back until your leg is almost straight. Pause for a second before returning the weight to the starting position.