An exercise device provides a revolving range of motion around an axis designed to provide an exercise of the whole torso muscles in one block. Multiple embodiments include a base frame, an arm portion connected to and extending from the base frame and a rotatable platform mounted on the arm portion. In some embodiments, the arm portion is adjustable and is configured to form a plurality of angles with the base frame, and the platform is configured to be mounted on the arm portion at a plurality of distances from a center of the base frame. Other embodiments include a base frame, a substantially enclosed track mounted on the base frame, a rolling mechanism that rides on the substantially enclosed track and a rotatable platform that rides on the rolling mechanism.