Elliptical trainers provide one of the best cardiovascular workouts of any fitness equipment. The Dual Action Elliptical trainer is compact to fit into smaller workout areas than many elliptical trainers. Because it mimics the normal elliptical motion of the foot, the extension of the leg, and the rotation of the hip during walking or running, the Dual Action Elliptical trainer is as effective in burning calories as jogging but without the impact on back, knees, hips and ankles.