Protein Shakes You don't need to be a protein pro to digest the right information. So are all protein shake supplements bad? No. Are many brands full of bulking agents, unwanted additives with poor quality protein?? Yes. Is the protein shake supplement Industry corrupt? Generally speaking... Yes! Bottom line, there are some fantastic protein supplements out there amongst many, many below par products. First & Foremost... Protein through food sources is the BEST option! Lean m