the instructor had this determined glint in her eyes and said things like "FEEL the POISON surge through your veins!"
"Pain is temporary! But quitting is for ever!"
"You want beautiful legs? You gotta WORK for them!"
"Never give up! Oh yeah!"
"If you can't take it, then it's your fault okay?"
"Push it push it push it!"
there's some profound issue in there somewhere
I"m gonna be in pain tomorrow
But it's better than yoga where they tell you to visualise your worries floating away