8 sets of 50 over an hour would allow 5+minutes between each set and that seems utterly reasonable to me. I’m not sure I could do it now—but that’s four decades later. If one guy decided to do all 400 in the space of 10 minutes and was capable, and everyone else decided to emulate him, well, that’s their problem, not the coach’s, so far as I’m concerned.
If they can’t do 8 sets of 50, they can go out for power puff.
power=powder
Great typo as typos go