Muscles are the "engine" of the body’s form. For a sculptor, the goal isn't just to memorize names, but to understand origin, insertion, and function.
This is the most botched area in sculpture. anatomy for sculptors
Traditional 2D anatomy books are great, but 3D scans or anatomical "écorché" models (figures without skin) are far more useful for understanding how shapes wrap around the body. Muscles are the "engine" of the body’s form