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 (palms facing each other). Extend arms at sides, slightly bent. Engage core, maintain a straight back. Raise one dumbbell to shoulder height, palm facing inward. Lower in a controlled manner, then simultaneously raise the opposite dumbbell. Alternate arms.
Control movements to maximize muscle engagement and prevent injury. Avoid swinging; maintain strict form. Keep shoulders down and relaxed. Exhale on the lift, inhale on the lower. Start with lighter weights, ensuring neutral wrist alignment.
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