Originally Posted by Chris Mason
It's simply because they don't know better.
this. you need to remember that for a lot of people, all this fitness and eating right can be overwhelming. you have so many things going on (what to do, when to do it, what to eat, what supplements, mobility etc..) that it is easy to just look what other people are doing. when you see so many great athletes push or promote something like Progenex, its easy to just say "hey, it must be working and worth it if these guys are using it".