As a sculptor it’s really important to understand the skeleton. Even more important than the muscles because the skeleton lets you know where the muscles are headed. Here’s some references from my ebook “An Artist’s X-Ray Vision: The Male Figure” that was basically just an assignment I gave myself to help myself and others “see” the anatomy better. I’d like to do more of these in the near future! https://andrewjosephkeith.company.site/An-Artist%E2%80%99s-X-Ray-Vision-p309653019