Steve Hampton: Figure Drawing: Design and Invention.
I took one of his classes back when I went to art school and he’s an incredible professor and instructor. I’d advise people to look through his studies and even buy his book. It’s not necisarilly how to draw correct anatomy but to know it while making it stylized. His class basically teaches the mechanics of the body while using imagination.
Seriously, I recommend anyone to attending one of his online workshops. It’s kind of pricey but much more affordable than what I paid. Then again I had my own benefits.