Air Force Senior Airman Brandon Stout, 380th Expeditionary Civil Engineer Squadron, does pull-ups during a workout at an undisclosed location in Southwest Asia on Sept. 11, 2013. (Staff Sgt. Joshua J.

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Pull-ups are a demanding full-body exercise that ...

Pull-ups are known to improve upper-body strength. The exercise primarily targets the latissimus dorsi, biceps, and shoulders, while also engaging the trapezius and rhomboids. Completing 25 pull-ups ...