Busy showing their *** and bitching at any guy caught looking.
Well not all the girls, but only those who wear yoga pants even when they are not doing any exercise, e.g. Wearing yoga pants to grocery stores, etc. Ok they could argue that buying groceries is part of their daily exercise routine... Lol
Jokes aside, good yoga pants do help shaping ***** better. No doubt about that. My personal trainer at the gym told me that lululemon is the best!
However, i do believe that they are not magical pants and your *** need to be at least decent to begin with.