Abstract: An arm wrestling apparatus comprising a handle that extends upward out of the top of a cabinet which handle is adapted at one end to be grasped in a person's hand and which is coupled at the other end to a gear mechanism that is, in turn, coupled to the exposed ends of piston rods of a pair of opposing pneumatic cylinders, which cylinders are pivotally mounted at their other ends to the frame of the cabinet. The top of the cabinet is provided with an elbow rest for users of the apparatus. An air compressor with its associated hoses, couplings, and controls provides a variable and controllable air pressure to the pair of pneumatic cylinders which, in turn, transmit a muscle-opposing force through the gear mechanism to the handle. Switches, timers and display lights are provided to control the operation and timing of the apparatus and to indicate the results of person's attempts to wrestle the machine.