a stretching machine includes a bench having at least one base members . a cam is coupled to the base member or one of the base members , if there is more than one . a stretching arm is coupled to the cam at one end and has an extremity attachment device at its other end . an actuator is coupled to at least one of the base members and is coupled to the cam . the actuator enables movement of the cam and the movement of the cam enables movement of the stretching arm . there is a control mechanism for controlling the actuator .