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 each hand. Hinge at the hips, keeping your back straight and knees slightly bent, until your torso is nearly parallel to the floor. Let dumbbells hang with palms facing each other. Engage your core and align your neck with your spine. Raise dumbbells out to the sides until arms are parallel to the floor, maintaining a slight bend in your elbows. Pause, then slowly lower to the starting position. Repeat.
Maintain a neutral spine. Squeeze shoulder blades at the top. Control the descent. Avoid momentum. Keep your head neutral, focusing on a spot on the floor.
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