Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Set an incline bench to 45 degrees. Lie face down, chest supported, feet firmly planted. Grip the barbell with a shoulder-width underhand grip, arms extended. Keeping elbows close, curl the barbell upwards, contracting your biceps. Pause at the top when forearms are vertical. Slowly lower the barbell back to the start, fully extending your arms. Repeat.
Maintain chest contact with the bench. Squeeze biceps at the top. Avoid momentum; control the movement. Keep wrists straight. Start with a lighter weight to ensure proper form.
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