Definition
Serratus muscles are located on the sides of the chest, characterized by their jagged, saw-toothed appearance. They play a vital role in scapular (shoulder blade) movement and stability. Think of them as the muscles that allow you to punch with power. They help rotate and protract the scapula, enabling a full range of arm motion. Strengthening these muscles improves posture and athletic performance. They're essential for activities like swimming, throwing, and even breathing.