NEW Jillian Michaels Killer Cardio DVD Factory Sealed. Introducing Jillian's first pure cardio DVD, Killer Cardio. It's comprised of two incredible 25-minute workouts that progress in difficulty to blast calories while building endurance and cardiovascular conditioning. The workouts are formatted to push you through each move for 20 seconds at full force and then take a 10-second recovery break. New.
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