The present invention relates to equipment, apparatus and systems used for exercising muscle groups of the body, more specifically, a resistance system for making variable mechanical resistance exercises, which receive voice commands, changes in brain waves andor any body movement. The optical system of the invention comprises a variable mirror and a moving optical element group. The primary system components are panels, support posts, telescopic beams, adjustable hanger connections, wall hangers, wall beams, raking shore assemblies and erectionstripping staffs. Reagent use is monitored and controlled.