Omg I totally did one time. In highschool not by my choice at all. Fighting is way stupid but some girls boyfriend apparently had a crush on me or something and she came to my house after school with friends and attacked me. I had super fast reflexes tho and threw her down and hit her back... Just as like quick reflex thing and she left. It was like 3 min probably and I found that adrenaline makes it not hurt which was interesting.