Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Stand with feet shoulder-width apart, holding a dumbbell in one hand. Slightly bend knees and hinge forward, keeping back straight and core engaged. Let arm hang naturally. Raise arm to the side, parallel to the floor, with a slight elbow bend. Pause, squeeze shoulder blades. Lower slowly. Repeat on the other side.
Maintain a neutral spine. Engage your core. Focus on shoulder movement, not torso momentum. Control the weight throughout. Avoid shrugging; keep shoulders relaxed. Start with a lighter weight.
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