Zumba has taken Louisville's South End by storm. Women of all ages, colors, shapes and sizes are shaking what they've got two hours a week. As I talked to women in the room, about half of them told me of the weight-loss success Zumba has brought them. A number of them said they had lost between 35 and 50 lbs. in the last year on two hours of exercise a week. Three older women in the front row were incredibly inspiring: a seventy-six-year-old in golden high tops, an 82-year-old and an 86-year-old (fourth above) who was headed to Tai Chi class afterward.