I took Craig Srebnik's figure class recently. He had us thinking about depicting the body carefully. In the class we often referred to Bridgman's Guide to Drawing from Life. (It turns out the book is available in several places online in pdf form). I liked when Srebnik discussed the "distribution of masses" with us. Bridgman's round-square-round-square system helps to make sense of many shapes within the figure.
In other news, I took a walk today and as usual I wound up at the Monastery. The sky was especially pretty. One of these days I vow to sketch or paint at least a portion of this beautiful building.
(Top Photo) Practice sketch: Celeste Bergin, Distribution of Masses, pencil on gessoed paper