I remember an old Cops show where they went to a nightclub sidewalk and found a knocked out young guy with a knife, plus a small elderly man in good condition. He was walking down the street and the other guy jumped him and got knocked out. Old guy told the cops he had been a boxing champ years ago.
I tried a “kick boxing” class about ten years back. Tore my ass up. My friend was a hell of a puncher - I was the worst in the class of 40 people. She was tall and thin and could punch like a man! By the time I had gotten bored with the class I had learned to punch well enough so that she complimented me, and that was a BFD to me.
But I could kick. I could kick better than dam near anyone but the instructor. I danced street jazz for a dozen years, and my kickin’ muscles were spectacular. :)