Which muscles do pull-ups work?

Being able to do a pull-up is a common fitness goal but which muscles do pull-ups work and why are they so difficult?

What's The Difference Between Chin-Ups & Pull-Ups? Which is Better?

Pull-Up muscles - Which muscles are used during Pull-Ups?

Chin Ups or Pull Ups: How to Choose the Best Upper Body Exercise – Gravgear

What Muscles Do Pull-Ups Work?: Plus Variations, Sets and Reps

Improve your pull-up and chin-up technique with these six exercises

WHAT MUSCLE GROUP DOES PULL-UPS WORK? – FitBeast

Chair Pull-Ups: Why They Help and Mistakes to Avoid

Kipping Pull-Ups Benefits: What muscles do CrossFit Pull-Ups work?

Ideer Life - A pull up bar is a suspended horizontal rod that you

What Muscles Do Pull-Ups Work?