NOVELTY - The exercise system has user interface, force sensing device, electronic controller and force generating device. The user interface and force sensing device are adapted to provide information to electronic controller. The electronic controller is adapted to convert information to continuously variable control signal for force generating device that is adapted to provide variable resistance to user. The user is allowed to exert force in one direction through desired repetitions and optimally exercise an isolated muscle or muscle group.    USE - Continuously variable resistance exercise system for muscle building, muscle toning, and physical rehabilitation.    ADVANTAGE - The fully contracted position and gradually pull the muscles back to the original, fully-extended position are maintained. The ultimate exercise machine can allow interactive programming to continuously vary the user resistance forces and timed intervals to provide the optimal and most efficient process to achieve the maximum physiological results for each exercise type. The muscle strain is minimized, when user stops supplying force. The replacement of the metal weight system of exercise machine with more efficient muscle building or rehabilitation mechanism is obtained. The steady lifting motion is maintained without any jerking. The opportunity for the maximum benefit in weightlifting is effectively created by accomplishing the rules. Simple set of muscles can work in the same direction at maximum effort, thus exhausting the muscle in shorter period or time with the maximum benefits. The need to cheat through competitiveness at weightlifting by improper methodology or excursive weight is eliminated.    DETAILED DESCRIPTION - The exercise machine is provided with communication glasses that are selected from Google (RTM: American multinational corporation specializing in Internet-related services and products) glasses.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating the operation of the basic continuous variable resistance exercise system.