Psycho ThumberThe thumbs play a huge role in wide pinches and thick bars. This is similar to the Rolling Thumber in that it really challenges the thumb, but is also very different in that it also combines the critical use of the fingers and wrist. In balance, these three must be strong in order to lift much weight here. Some people prefer to have the fingers further down the curved plate, producing more of a wide pinch grip, whereas others prefer to have the