This advanced cardio workout uses interval training to challenge your body so you burn fat and calories in a shorter period of time. Tony takes you through a series of high-energy intervals that will strengthen your body and boost your energy. You’ll work your entire body with special targeted toning of your core, waist, hips, glutes, and thighs with this lively combination of exercises that offer beginning, intermediate, and “I can’t believe I’m doing it” levels. From the Power 90 Masters series.