Elliptical trainers are the newest and most exciting machines on the market today. These machines offer a low impact, elliptical (or egg shaped) stride which can be used in either a forward or reverse motion. This elliptical motion will allow you to enjoy an excellent cardiovascular workout without the jarring of your hips, knees, ankles or lower back. The smooth motion of the elliptical movement works the large muscles in your lower body. By changing direction, stride length and resistance, you will tone your gluteals, quadriceps, hamstrings, and calves better than with any other cardiovascular machine. It's the perfect aerobic exercise to help increase bone density without the impact.