I used to fight all the time as a kid, in elementary school i was part of this wrestling thing around lunch time, when all kids from all grades would wrestle each other for fun.  It went on for a pretty long time, it was a really friendly thing, nobody got hurt, nobody took it personally.  My last year in that school, they forced the kids not to wrestle there anymore.
Lately, I have done some grappling with friends.  One of my friends put me in a choke hold, at the same time i had drank 11 beer that night, a few glasses of wine, 2 blowjobs, and 2 caesars.
The same friend, when sober, we grappled in the shallow part of  a beach.  I noticed he always tried to go for the takedown, he knew had to grab my leg, but i was simply too strong for him.  After a long stalemate, i decide to go down, but on top of him.  He didnt expect it at all, as soon as i started going down I used all my bodyweight to catapult him below me.  Immediately after, i put him in a choke hold and he tapped out.  He was a somewhat experienced grappler, I had virtually no experience lately, but pure strength dominated that match.