Stand facing a cable station with a stirrup handle attached to the low pulley. Bend down and grab the handle with one hand as you lift that same foot off the floor and balance your other leg. Keeping your arm extended out in front of you, begin by squatting down as low as possible, holding your nonworking leg up toward your butt. When your working leg is parallel to the floor push back up to the starting position and repeat without putting your foot down until the end of the set.