The revolutionary Four Minute Workout is the most time effective aerobic workout ever developed. It is built around the innovative ROM Time Machine which allows to cut back effective workout time to just 4 minutes. The extended range of motion - ROM - cleverly used by this machine under automatically adjusted resistance allows to cut back effective exercise time to the incredible four minutes. In addition ROM Machine counteracts our natural tendency to contract and shrink with age and helps to elongate muscles. In one 4 minute workout, the Quick Gym / ROM machine will give you 3 workouts in one: a strengthening workout, a cardio workout and a flexibility workout.