I came here to say this. I read about all this stuff years ago on SomethingAwful of all places. If you've ever bothered to do any research rather than just believing whatever your gym tells you, you know all of this.

For life in general, or at least the things that matter in life, it's always a good idea to do your own research. Otherwise you end up going through life believing the half-baked stories people make up so they don't have to think, and the bullshit people tell you to sell you stuff.