a stair simulator exerciser for use in maintaining personal fitness including a frame member , the frame member having a column provided at its frontal portion , the column may incline rearwardly , a pivotal assembly is mounted for approximate vertical adjustment upon the column , and a pair of pivotally disposed foot platforms connect with the assembly . when the assembly is raised upon the column , the foot platforms undertake a particular arc of movement with respect to the frame member , but that when the pivotal assembly is arranged downwardly , upon the column , the angle of the arc of shifting of the foot platforms differ from the previous setting . structure is provided for regulating the degree of resistance to the downward movement of the foot platforms during performance of an exercising function .