I thought pull-ups were beyond me until I tried this move that improved my grip and back strength

I stopped trying to pull myself up, and my pull-ups got better ...
Military.com

The Great Pull-Up Grip Debate: Thumbs on Top or Around the Bar?

U.S. Marine Corps Sgt. Maribel A. Castaneda, an aviation operations specialist with Drill Instructor School, doing pull-ups before a physical training session. (Cpl. Julian Elliott-Drouin/U.S. Marine ...