1.5 HP AC Motor Stair climber works all of your major lower-body muscles, including glutes, hamstring. Stair climber can play a part in toning and conditioning your legs. Climbing stairs provides your entire lower body with an effective workout. Stair climbing works all of your major lower-body muscles, including glutes, hamstrings, quadriceps and calves. Strengthened gluteal muscles have the added benefit of making your butt look toned and firm. When you stair climb for exercise, you burn twice the fat in half the time than if you run and three times more than walking. An intense stair-climbing exercise session will produce more aerobic benefits in a shorter amount of time than running or walking.