Man is engaged on a simulator of upper thrust block. Pull upper block has as its main goal elaboration of widest back muscles. Secondary muscles are biceps, shoulders. Sit on a bench. Grasp handle of broad straight grip. Inhale, on exhale, begin to pull neck down until it touches your upper chest. Slowly and controlled return your fretboard to its original position when Your arms are fully extended, and latissimus dorsi muscle is maximally stretched. Repeat specified number of times.