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I have been doing Zumba lessons for the last few weeks and my right calf is hurting during the class really badly. I wouldn't say it was like a sharp cramp...more like a dull aching pain. It lasts thru the class and then when I am done...it goes away. 2 mintues into the next class...it is back...

what is the discussion about all of this?? and why would they want to change it??