X-TrainFit Toning - Karen Gentz - 3 Workouts Plus Bonus Super Sets Compliment your current cardio program with these targeted toning workouts. Get lean muscles that burn calories at rest and shred fat. Tailor your schedule to your goals with multiple free online calendars. Karen gets down to work and gets you through the workout in only 20-30 minutes each day! Each workout includes a bonus super set for those seeking a little extra burn!