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In this segment of the "Best Shoulder Workout" video, the presenter warns against the common mistake of moving the arms directly out to the sides during side lateral raises, which causes shoulder shrugging and over‑activation of the trapezius, often leading to shoulder discomfort. He demonstrates a corrected movement path: pushing the dumbbells toward the corner of the wall (a diagonal outward‑upward trajectory). This cue keeps the shoulders down, reduces trap involvement, eases stress on the shoulder joint, and allows the deltoids to be targeted more effectively while minimizing injury risk.
