The Shredder is the highly difficult bodybuilding technique features in the episode Power Tower. If done correctly, it will shred the paper banner, clothes and hairs of the surrounding people. However, if done incorrectly, it will result in the destruction of the bodybuilder.
The technique involves bending the body backward until the head gets through the groin and two hands must grip together to complete the technique.
So far, only Muscle Man is able to perform the technique perfectly and survive.