Back in 2008, I hosted a Zumbathon event for Defiance Y and proceeds went to the Heart association for Heart health month. I already had a a big following of about 30 people in my zumba class (Sue, Mary...oh the jingling belts!!), but we had over 100 people show up and I needed a mic and it was fun, but I have to admit I was stressed that people would get hurt because you can't really help individuals in a huge group like that. It's not my favorite style, but a fun one time thing for a good cause. Angie