Exercises Your Trainer Doesn't Want You to Do

Let's get past the superhero reference with the least amount of fandom as possible. The truth is that this is a move that has become a staple of a lot of workout routines, but it's also a move that you should stay away from.

Why you shouldn't do it: Not only is this exercise bad for the back in that it compresses the nerves between the spine, but it has such a limited range of motion that you're not fully engaging the intended muscles. The position (face down) that the superman exercise puts you in does not allow for much of an extension.