You are a Muscle is a book for muscle development. When we talk about muscle development, we often forget other important elements of the musculoskeletal system. Many people involved in strength training and muscle development neglect the bones, joints, tendons, ligaments, and skin, which are vital components of our system. To achieve overall fitness, we need proper knowledge of our body. We do not want to develop one aspect at the expense of another.Muscles are broadly classified as follows: Major muscle groups → chest, back, shoulders, arms, core, glutes, legs Skeletal muscles → voluntary (you control them)Cardiac muscle → involuntary (heart only)Smooth muscle → involuntary (organs like intestines, blood vessels, etc.)In this book, we will focus only on voluntary muscles-those under our control.