The major differences between chin-ups and pull-ups — and what muscles are worked for each exercise

Because of the differences in grip, chin-ups mainly work muscles in the front of your body, whereas pull-ups focus on the back muscles.

Push vs. Pull: Why Doing Sets of Both Exercises Is the Best Way to Make Gains

Pull exercises are also great for echoing the movements we make day to day. “Pull exercises enhance the strength of the back, ...
Military.com

Do This to Get Your First Pull-Up or Improve to Double Digits

Federal law enforcement agencies, such as the FBI, have added pull-ups to the special agent candidate fitness test. Here is a ...