Struggling with Pain in Art Class

Rant? - I am currently in an art class that is really physically demanding. Today I rammed and helped lift many pounds of sand for around 4 hours straight and I was really dreading the pain to come afterwards and trying to manage the pain I was in. My teacher noticed I was tired and he said “I know this is hard. This is how we weed out the wimps.” And I know he was probably trying to be more encouraging than not, he’s a generally pleasant person, but I felt like he was calling me weak. I had contemplated giving up and asking for help until he said that. I have mentioned my EDS diagnosis to him but I doubt he remembered. I’m currently in bed in horrible pain just honestly hoping someone can relate to this type of experience I guess.