Cardiorespiratory responses to intermittent exercise and relaxation were comparable to cardiorespiratory responses to continuous exercise. The time of workout and work loads were kept constant in both protocols. Even though in the intermittent exercise and relaxation protocol the 10 subjects rested nearly two-thirds of the duration of the workout, cardiorespiratory responses were similar to those which the same subjects attained while exercising continuously throughout the entire steady state workout at approximately 64% maximal heart rate.