So I've recently signed up for Zumba classes and I've decided I'm going to take the Zumba Challenge. What do I have to loose right? The challenge is to see who can loose the most percentage of weight loss in a 15 class period. The weigh-in is this coming Tuesday and I think it ends on July 15th. I'm excited about this but somewhat nervous too. I've never had much success loosing weight when I wanted too. So hopefully this will be a good experience.