I have quite a few friends that have lots of knowlage of roids and have been doing them for over 10 years . The use deca ,test ,tren masterone well just about everything. But they do not use any AI's or SERMS ever . They never get gyno or really even bloat( I know about 3 guys like this). Then you have the normal guy who has to run AI's or SERM in every cycle or will get awful gyno symtoms. Just wanted to get some feedback on why this occurs?? Why dont these guys get gyno using heavy doses of tren, test and so on???