hey man, get yourself some BCAA's, take em before and after your work out. I've been tryin to shred up this past month w/o any supps just shit load of cardio. i cut down my bf% but also lost muscle too. I just ordered a bottle of BCAA's through one of the trainers at my gym, the shit helps ur body from breaking down muscle tissue and helps retain a positive nitrogen balance. I've tried like ephedra products, but fuck all that. it just curbs your appetite making it very difficult to gain or even maintain your current mass. Try to eat cleaner with about 1.5g of protein per lb of bwt per day, and cardio after each workout. Look up branched chain amino acids ( BCAA ) Good luck bro.