I'VE EXPERIMENTED WITH SUPPLEMENTS ON AND OFF SINCE I WAS 18. I HAVE YET TO FIND ONE THAT REALLY AND TRUELY WORKS ALL THAT WELL. YES, SOME HAVE DONE THEIR JOB FOR A SHORT TIME, BUT I HAVE ALSO DUMPED ALOT OF $ INTO SOME TOTALLY WORTHLESS ONES! I DO READ ALOT, AND MOST OF THE RTHINGS I READ ALL AGREE THAT THE TOP SUPPLEMENTS ARE CREATINE, GLUTAMINE, A GOOD MULTI-VITAMIN, AND PROTEIN POWDER. I DON'T USE CREATINE ANYMORE.