Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Stand with feet shoulder-width apart, holding dumbbells with an underhand grip. Arms hang by your sides. Keeping elbows stationary, curl wrists upwards, contracting forearms. Pause at the top, then lower slowly and controlled.
Grip firmly, but avoid excessive tension. Isolate wrist movement; keep arms and elbows still. Perform slowly for maximum muscle engagement. Avoid momentum; control the entire range of motion. Start with lighter weights to ensure proper form. Maintain a neutral spine.
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