close grip chin-up

Grab the pull-up bar with your palms facing towards you and your hands shoulder-width apart. Hang from the bar with your arms fully extended and your feet off the ground. Engage your back muscles and pull your body up towards the bar, keeping your elbows close to your body. Continue pulling until your chin is above the bar. Pause for a moment at the top, then slowly lower your body back down to the starting position. Repeat for the desired number of repetitions.