Pull-ups are one of the most coveted bodyweight exercises for strengthening your upper body, namely your back, biceps and posterior deltoids (the rear shoulder muscles). For many, it’s a long ...

“The pull-up is a pretty mighty exercise that uses or engages muscles from just about everywhere in the body." The primary movers—that's the muscles responsible for the bulk of the force—are ...

Some dogs – especially smaller breeds – pull with a force more than twice their body weight on the collar, potentially damaging their throats, says Erin Perry at Southern Illinois University.