I'm an industrial electrician. I'm also skinny; people often undrestimate me. Once I had two non-electrician coworkers helping me pull some large wire and make up splices in a trough. One beefy guy was struggling with the wire, so I grabbed it, twisted it around into place. The other guy says, surprised, "You're stronger than you look." I just said, "Sure".

Because of the way the strands are laid, wire has a direction and way it "wants" to go. I'd been an electrician twenty years by that point and knew how to work it. Not strength. Not that I said any of that.