Your muscles can react when shocked in uncontrollable ways. This is why if you ever touch a live wire (don't?) do it with the BACK of your fingers so that when

Your muscles can react when shocked in uncontrollable ways. This is why if you ever touch a live wire (don't?) do it with the BACK of your fingers so that when your muscles contract, you don't grasp the wire (what happens next is left to imagination).