Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Attach a bar to the low pulley. Stand facing the machine, feet shoulder-width apart. Grip the bar with an underhand grip, hands shoulder-width apart. Keep elbows close to your torso and back straight. Curl the bar towards your shoulders, flexing your elbows. Pause at the top, contracting your biceps. Slowly lower the bar back to the starting position, fully extending your arms.
Maintain a stable posture; avoid body swing. Isolate biceps by keeping shoulders relaxed. Control the movement throughout the entire range of motion. Adjust weight for proper form. Keep wrists straight.
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