After all these angry posts against women who are enjoying themselves and trying to stay healthy, it needs to be said again:
Women, do not listen to the people who claim to state halachah while admitting they are incapable of reading a sefer halachah. Do not listen to those who define tznius or yiddishkeit for that matter, by what THEY do, or what THEY have heard. Decide for yourself. If you need guidance, get it from someone you trust.
And “zumba women”, do not worry. It is not because of you that bad things happen, and don’t ever let anyone make you think that.