For most of my adult life, I've held to the belief that there is no such thing as bad exercises - only bad ways to do good exercises. You can take the most effective exercises and make them useless and compromising just as you can turn an ineffective exercise into a safe and functional one. That said, some exercise machines and movements are just flat-out awful.
Here are the "Unlucky 7": exercises where the risks far outweigh the benefits.
