To learn anatomy for the human figure.
Learn the skeleton.
Learn the muscles and where they attach so you can draw the figure from imagination.
Learn all about how to draw breasts and their mechanics, how they squish, attach, etc.
Learn to draw skin and fat, where fat builds up.
Learn to draw, heads, faces, hands, and feet.
Putting it all together. Learning specific parts of the body on motion, to better understand some more difficult muscles.