Pull-ups, inhale, hold your head high, lean back as far as possible, abduct your elbows, relax your shoulders and tighten your back muscles. It is best to pull the body to the bar and touch the nipple, contract for 3-5 seconds at the peak, and fully tighten the back muscles.
Then slowly lean back in 2-3 seconds until your arms are completely straight, so that the latissimus dorsi and back-related muscles can be fully extended, while your legs are straight, and the whole lower body is relaxed and exhaled. Repeat the exercise. Second, attention: the movements should be standardized and the ideas should be concentrated.
When doing pull-ups, imagine that the upper lateral end of latissimus dorsi is pulled to the waist until the chest touches the bar, and you can't pull up any more. Stop for 3-5 seconds, so that all the muscles in your back are completely tightened, as if the whole body's blood is rushing to this part.
Only in this way can we really get the breadth and depth of stimulation needed to practice latissimus dorsi, so as to effectively develop latissimus dorsi.