I did underground fighting in my twenties. I wasn't one for fists but two machetes. The rules were you could only slice, without damage such as their eyes. Stabbing was out-lawed as blood would fly.
I could somersault and twirl around, I would tire opponents that were bound. The rule was just one slice for the victor, I took it easy on the losers with a tiny finger simply, a little bit sliced not needing stiches.
I only did it for the money and my demons but truthfully not the blood was my intention Just the fame and a win with just one slice They called me The Machine, kinda nice.
Someone once said to me, to live forever, You have to be a warrior or a writer.