Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Attach a bar to a low pulley. Kneel facing the machine, back straight, core engaged. Grasp the bar with an underhand grip, shoulder-width apart. Keep elbows close to your sides and stationary. Start with arms extended, cable taut. Curl the bar towards your shoulders, flexing your elbows. Squeeze biceps at the top. Slowly lower to the starting position, fully extending your arms. Repeat.
Maintain a neutral spine. Keep elbows fixed to maximize bicep engagement. Control the movement throughout. Exhale on the curl, inhale on the descent. Choose a weight allowing proper form.
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