I used to curl 35kg dumbells, that's 77.5lbs, as part of DC training. DC mindset and Branch Warren articles in MD convinced me tendonitis in arms was par for the course so wasted hundreds of euros on physio.
10 years on I use less weight for higher reps and arms are magically 2" bigger. On less gear too.
So hard to find the balance between Weider principles horseshit and you have to constantly be stronger bullshit. Lamb shit is where it's at.