Personal fitness coach Yuri Elkaim demonstrates how to do high intensity interval training for beginners on treadmills. Start out with a light walk on a treadmill for about three to five minutes. From a walk, do a low grade jog for 30 seconds. Then, switch to a minute and a half of walking. Use a three to one ratio of low intensity to high intensity workout. As the workout progresses, it will get more challenging. Repeat the workout interval repetitions for 10 to 15 minutes. The interval workout training method will help you build your confidence in doing high intensity workouts.