Latissimus, Forearm, Trapezius, Shoulders, Biceps, Back
Grasp the bar using a supinated grip (palms facing towards you) past shoulder width. Keep your back straight and scapula retracted and depressed (drive the shoulders down and shoulder blades together).
Pull your body up, keeping your elbows back. Pull up to your chin or neck area and pause there for time specified in the workout. Lower yourself down with control and relax your shoulders at the end.