Several of my coworkers have been doing zumba after work. They all gather in the front lobby and follow along to zumba videos on youtube that they watch using a Tivo Premiere. They have a great time. They have been doing this for a couple of months now and they have all lost weight and feel like they are in better shape. I will keep you posted as to how long this lasts and how well they are progressing in their weight loss objective.