Seated elbows-in alternating dumbbell overhead press. A compound exercise. Target muscle: Anterior Deltoid. Synergists: Upper Pectoralis Major, Lateral Deltoid, Triceps Brachii, Middle and Lower Trapezius, Serratus Anterior, Obliques, Psoas Major, Iliocastalis Lumborum, Iliocastalis Thoracis. Dynamic stabilizers: Biceps Brachii (not highlighted in illustration), Triceps Brachii (long head).