Use it or lose it! Wait, that never is something you want to hear! Read the text article by Jeffrey Hord titled "Use It or Lose It: The Dynamic Nature of Skeletal Muscle" to learn how to combat a loss in muscle. "Skeletal muscles come in a variety of sizes and shapes so that they suit the particular function that they perform. Some of these muscles work virtually all of the time while others are necessary only part of the time."