ive been working out for 15yrs or so. using gear @ 5yrs. Im 5 7 185lbs and bust my balls at the gym. Im swole but there are a couple guys running jintropin at my gym that are freakin monsters and my people say they are running 20 ius daily. My question is this the next step in getting freaky shoulders and back? Also I thought you were supposed tu run @ 5 ius daily? Lastly is this stuff hard to mess with? Thanks for opinions and thoughts.