The world of fitness and bodybuilding is constantly evolving, and there's no shortage of supplements and drugs that claim to help enhance your workout and get the results you want more quickly. GW 501516 is one of the newest supplements to hit the market, and it's quickly gaining popularity among athletes and fitness enthusiasts. But what is it, and how does it work? This guide will provide an introduction to GW 501516, its benefits, and whether it's right for you.