I’ve never tried Zumba, but I’ve actually been doing this workout with my Mom for the past 6 weeks now. So far we’ve done it for 6 days a week, 6 weeks, and haven’t had a problem with the ball or the bands, they don’t really seem any less sturdy than any other sort of exercise ball. But I don’t bounce on it or jump on it, the exercises use it for sitting or lying on.
As for the workout itself, I like it, but I haven’t really worked out to any other workout tapes before. The workout is 60 seconds of one exercise, followed by 30 seconds of break/setup, then 60 seconds of another exercise. Each disk has a 12-exercise main workout, plus 3 sets of “mission specialist workouts,” 8 exercises apiece. The exercises include things putting your back on the ball, with the band under the ball, and pumping your arms up. Another exercise involves putting the band under your feet, raising handles to your shoulders, and doing squats. The exercises themselves are fairly varied, and they give you ways to make each exercise easier or harder, depending on your needs.
Like I said, I haven’t used other workout tapes, but I’ve been doing this one for a while, and I like it so far. I definitely feel stronger, but then again, I’m coming from couch-potato status, any exercise is good exercise. XD