Unlike other aerobic machines, the Helix also works the inner & outer thighs, delivering the kind of leg & glute sculpting usually seen only via weight training. Treadmills, steppers, ellipticals: they all work the body in a front-to-back motion, with great aerobic results but little spot toning. The Helix’s “sideways figure 8” motion lets users target their toughest areas while they condition aerobically ... for better results in less time