Bare-knuckle boxers trained to throw punches that wouldn't connect bone-on-bone, and thus end up breaking their hands. Barring that kind of injury, bare-knuckl

Bare-knuckle boxers trained to throw punches that wouldn't connect bone-on-bone, and thus end up breaking their hands. Barring that kind of injury, bare-knuckle boxing matches often went 20, 30, 40, 50 rounds, until somebody did throw a bad punch and disable themselves, or somebody fell over from exhaustion.