Kick-start weight loss with trainer Bob Harper and fan-favorite contestant Tara Costa and Sione Fa from NBC's "The Biggest Loser." Walk off the weight with four low-impact one-mile indoor walking workouts designed to get your heat pumping. Use the progress tracker to log your miles and complete a marathon like contestants on the show! Follow our three-week recommendation or go at your own pace and cross the finish line as a leaner, healthier you!
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