If it's time to get your body to wake up and smell the calories burning, this is the workout for you. It's all about-say it with me-Interval Training. One of the fastest ways to turn your metabolism into a major fat-burner is to add short bursts of intensity, or intervals, to your workout. In this 30-minute power-walking workout, we'll add two-minute intervals of light jogging to our brisk walking pace to keep that metabolism revving in the red zone. The results? A slimmer, firmer, more energized you! You'll love what this high-powered, in-home walk/jog program does for every part of you.