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 barbell with an underhand grip at hip level. Keep elbows close to your torso. Curl the barbell upwards, dragging it along your body, focusing on bicep contraction. Lift to chest level, pause, and slowly lower with control, keeping the barbell close.
Maintain a straight posture. Avoid momentum; use slow, controlled movements. Keep elbows slightly behind your body. Prevent shoulder movement. Choose a weight allowing proper form. Engage your core. Exhale on the lift, inhale on the lower.
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