Unfortunately, one bad rep can end a career. Many bodybuilders have seen this far too often in the industry. Though you don’t have to be a career bodybuilder to gain benefit from what we’ll discuss below. We’re about to uncover five of the worst exercises that you should never be doing! The “Flys” Believe it or not, many trainers will make the argument that chest flys can increase the stretch on your chest. Well it’s…"Five Exercises You Should Avoid"