Dumbbell wide-grip upright row. Exercise type: Compound pull. Target muscle: Lateral Deltoid. Synergists: Anterior Deltoid, Supraspinatus, Brachialis, Brachioradialis, Biceps Brachii, Middle and Lower Trapezius, Serratus Anterior, Infraspinatus, and Teres Minor. Important stabilizers (not highlighted): Upper trapezius and Lavator scapulae. Warning: For shoulder safety, use a wide grip, keep shoulders back, and do not lift dumbbells higher than middle chest.