Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Grasp a pull-up bar with an overhand grip, wider than shoulder-width. Engage your core and retract shoulder blades. Pull your chest to the bar, leading with your elbows. Continue until your chin clears the bar. Pause, then slowly lower with control.
Squeeze shoulder blades at the top. Avoid swinging; maintain control. Use assistance bands or negative pull-ups if needed. Secure, but not overly tight grip. Keep your body straight.
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