Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Stand upright with your arms fully extended, gripping the barbell shoulder-width apart with palms facing away from you. Keeping your upper arms by your side, exhale and raise the barbell up towards your shoulders by flexing your arms. Avoid using your legs or back to lift. Continue until your arms are fully flexed and the barbell cannot be curled any further. Inhale and lower the barbell back down, returning to the starting position.
Control tempo — slow down the lowering phase. Keep body stable — avoid using momentum. Pin elbows — upper arms stay fixed at sides. Protect wrists — keep them slightly back.
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