actually i just started taking my thermolife product. just finished up a cycle of finasol so my main goal right now is to keep my newly acquired LBM (about 5lb). i have been on the ecdy, along with md6 and t2, since last sunday (about 1 week). so far, i have noticed NO drop in muscle mass, and considering that i am on two fat-burning/weight-reducing supplements, this is a very good thing. since i have only been using the ecdy for one week, however, it may be a little too early to jump to any conclusions. i will post my results at the end of the month. right now the results are very promising, and i thank you guys in helping me in my decision to purchase it.