24 Hour Fitnessさんが投稿した動画
NBC's The Biggest Loser and Group Exercise [HQ]
Watch the Biggest Loser contestants as they take 24 S.E.T. ™, a Group Exercise class that alternates strength training exercises with step cardio training to sculpt every major muscle group. Try 24 S.E.T.™ for a truly balanced workout that will get your heart pumping. Watch NBCs The Biggest Loser Tuesdays 8/7c.