Sort of the point I was making. I have no doubt my gym teachers were trying to get some effort out of me. And the more they yelled and called me names, the less effort they got.
That all change in 11th grade, when I got a gym teacher (and ex military officer) who discovered that I actually liked sports - I just lacked talent at most of them, and was a bit lazy and a non-athlete. He challenged me to be better without calling me a "lard ass" or making songs up about my name or screaming that I was dragging the whole gym class squad down. He put me in place to have some success and when other students picked on me (as they had for years) he took issue with it. Actually made me partner one of them and we worked together and were the best team at what we had to do. My grade for all of those years of "abuse" was a "D" - my senior year under this teacher - I got an "A".
Some respond to the "tough love" and some don't. I didn't.