Because you need special shirts and shoes to work out? Nobody told me this!!! I have been wearing the same polyester Starter shirts with the sleeves cut off just because they were easy to hand wash and dried fast...when the rest of you were buying "special shirts"? WTF?! Why am I left out of all of the trends?! Fine, when Spring rolls around and I am hitting the aerobics class in my brand new "special" color coordinated Gucci sweatsuit, I shall have the last laugh. Bet on it!