Burning calories and enhancing coordination, the music-fueled workouts of Fit in 60 can be tailored to suit new exercisers, injured athletes, and moms-to-be. Fit in 60's founder discovered firsthand how focused, floor-based isometrics could sculpt muscles as long and flexible as a dachshund doing a gymnastics routine. However, these exercises didn't always raise the heart rate enough to provide a cardiovascular workout. Disappointed, she began to experiment. Lo and behold, when the moves were flipped upright, she could pair them with dance elements, which solved the heart-rate problem and added a dose of excitement.