Abstract: A bodybuilding and/or re-education apparatus that comprises rotating has a crank rotatable with one or both hands for displacing and driving a mechanical assembly with adjustable torque of the stationary bicycle type and for toning all the muscles in a single motion based on the body position of the user. The apparatus includes a crank adjustable to a man's height through a mechanical means mounted on a mechanical assembly from a stationary bicycle. The lever arm of the crank is telescopic and has an adjustable length for making circles with greater or smaller radii. As soon as the operator actuates the crank, whether on the side or facing the mechanism, the rotation axis moves in a continuous manner from A to B or B to A, forcing the operator to constantly change the bearing position of his feet on the ground or on a stand with an inclinable plane. The apparatus can be used in gymnasiums and the home for a major and original bodybuilding contribution.