Abstract: The invention relates to a fitness device (1) that can be used in a mobile or stationary manner, comprising: a frame (4) on which two front wheels (6) and one rear wheel (5) are disposed, a drive device on each side of the frame (4), each made up of an arm drive rod (2) joined to a leg drive rod (3) by a hinge, wherein the leg drive rod (3) transfers a torque via a ring gear (10) and a chain to the rear wheel (5), a steering device (7) for steering the fitness device (1) in mobile use by means of tilting the frame (4), and a tilting/steering damper formed by damping elements (9) and disposed between the front wheels (6) and the frame (4).