Muscle and Motion on Instagram: "🔥Rotate, Don’t Retract 🎯 When performing shoulder external rotation on the cable, many people allow the scapula to drift forward and backward, almost “lifting off” instead of staying stable. When the scapula shifts too much, the scapular retraction muscles take over. They switch from their intended role as static stabilizers into unwanted dynamic movers, reducing the load on the shoulder external rotation muscles. This usually occurs when the weight is too heav