why are muscles important
1 Muscles are the engine that your body uses to propel itself. 2  Although they work differently than a car engine or an electric motor, muscles do the same thing -- they turn energy into motion.3  It would be impossible for you to do anything without your muscles.ifferent types of muscle. When most people think of muscles, they think about the muscles that we can see. For example, most of us know about the biceps muscles in our arms. But there are three unique kinds of muscle in any mammal's body: 1  Skeletal muscle is the type of muscle that we can see and feel.