A static dynamic exercise apparatus comprising; a. at least one spatially displaceable object having a predetermined mass movably coupled to a support frame and coupled to a force applicator capable of transmitting a user-applied force to the spatially displaceable object; b. a resistance system coupled to the spatially displaceable object and the force applicator capable of producing a variable resistance to movement of the spatially displaceable object and the force applicator, including at least a resistance to movement equal to or greater than the user-applied force and wherein the resistance system may be reversibly alternated between at least two predetermined levels of resistance, so that a first resistance is preventing the user-applied force from displacing the spatially displaceable object, and this resistance is releasable such that the resistance system generates a second resistance less than the user-applied force, thereby allowing the user to spatially displace the spatially displaceable object, and wherein the second resistance is as low as can be practically achieved, given the necessary constraints of friction within the mechanism of the apparatus, wherein the resistance system further comprises a pressure generator capable of creating a pressure in fluid communication with a resistance interlock, wherein pressure produced by the pressure generator is transmissible to the resistance interlock, thereby creating the variable resistance to movement of the spatially displaceable object, and wherein the support frame further comprises at least one rail having a length, a rail lower end and a rail upper end, slidably coupled at the first predetermined position to at least one object selected from the objects consisting of the spatially displaceable object and the force applicator, wherein the spatially displaceable object may be displaced to a second predetermined position on the rail length by the application of the user-applied force to the force applicator, and wherein the rail lower end has a rail lower joint rotably coupled to a rotable rail attachment on the support frame and the rail upper end has a rotation channel engagement area movable within a rotation channel on the frame allowing a predetermined degree of rotational movement of the rail relative to the support frame. a. at least one spatially displaceable object having a predetermined mass movably coupled to a support frame and coupled to a force applicator capable of transmitting a user-applied force to the spatially displaceable object; b. a resistance system coupled to the spatially displaceable object and the force applicator capable of producing a variable resistance to movement of the spatially displaceable object and the force applicator, including at least a resistance to movement equal to or greater than the user-applied force and wherein the resistance system may be reversibly alternated between at least two predetermined levels of resistance, so that a first resistance is preventing the user-applied force from displacing the spatially displaceable object, and this resistance is releasable such that the resistance system generates a second resistance less than the user-applied force, thereby allowing the user to spatially displace the spatially displaceable object, and wherein the second resistance is as low as can be practically achieved, given the necessary constraints of friction within the mechanism of the apparatus, wherein