This gentle series targets the serratus anterior—often called the “boxer’s muscle” because it’s responsible for protracting the shoulder blades, just like when throwing a punch. A strong and mobile serratus anterior helps keep the shoulder blades stable against the ribcage, which is essential for smooth, controlled arm movements and injury prevention. Starting with single elbow slides (whole forearm) against the wall, then progressing to both forearms, hands and then elbows, this drill wakes up and strengthens the muscles that support healthy shoulder mechanics. Wall slides like these encourage better scapular motion, improve posture, and build the foundation for stronger, more resilient shoulders.