about: Replicate the extraordinary weight-loss results of the inspiring contestants from NBC’s “The Biggest Loser” with this yoga-based home workout hosted by one of the show’s trainers, Bob Harper. In Level 1, you’ll learn to activate your core and elongate your torso and limbs with a collection of fundamental yoga poses. In Levels 2 and 3, Harper turns on the burn with more intensive fat-fighting, stamina-building moves.