These guys are elite athletes.
I boxed at a battalion competition while in the Army. After winning two fights of 3 three minute rounds and the runner up award, I retired lol.
Was required to take two years of self defense training at Annapolis, including two semesters of boxing. Final exam each semester was to box two 2-minute rounds, a trial. Good thing is, many years later, I still remember the skills. “Wax on, wax off!”