Nope, not pull-ups — this is the one bodyweight exercise you need to build strength and muscle in your back and biceps without weights

Build strength and muscle in your back and biceps muscles, and improve pulling power using the bodyweight row. Here's how, according to a personal trainer.
Guinness World Records on MSN

Australian police officer breaks one-hour pull up world record

Australian officer Jade Henderson sets a new world record with 733 pull ups in one hour, inspiring others through strength ...