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 vertically at shoulder height. Engage your core, keep your back straight, and press the dumbbell overhead, fully extending your arm. Pause briefly, then slowly lower back to the starting position. Alternate arms.
Maintain a neutral spine and avoid leaning. Keep your wrist straight. Engage your core for stability. Use controlled movements. Start with a lighter weight. Exhale on the press, inhale on the lower.
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