Yes, although these were high school/college fights (my "hobby" in college was getting into fights with the football team. Quite a few bar fights, as well.
I NEVER started the fight...just finished them...most lasted about 2 seconds...that's not to say I'm Superman, I just have a strange reaction to pain...Doesn't slow me down, just makes me pi$$ed off, at which point I put a whuppin' on the guy who hit me me (or tried).
Took a cheap shot to the face from a 240 lb. linebacker in college...the expression on his face was priceless...He figured I was down for the count...Even through bleeding badly (BIG cut over my left eye), I never went down, and my first action was to turn back and look him in the eye and say " I"m gonna kill you!"
Later, I studied various martial arts for years. Since then, I've NEVER had to use any of them. Alot has to do with "attitude.When you KNOW you're gonna take 'em out, they can see it in your eyes/body language. I KNOW I'm gonna kick your a$$ (and all your friends, too), so I just walk away. I'm now 51 years old, have numerous physical problems, and I'd still go toe-to-toe with most anyone. And, it'll still be a real short fight, as I don't have the time or the ability, anymore, to fool around. So I'm gonna take a lethal shot (much like using a gun) right quick, to get it over with before I get hurt.