>>236
As far as I understand it, you learn processes to construct bodies. One way to do so is to simplify the anatomy into simple 3D forms: the head as a box for instance, cylinders for limbs, etc. It is important that these are 3D forms because then you can draw/imagine them from all angles, and thus draw a simplified body from any pose. You can place main landmarks of the human body (where the bones protrudes for instance, the famous vaganiàs bones, the navel, the sternum, etc.) onto those simplified shapes by knowing some basic measurements. You can approach muscles in the same manner, by simplifying them and knowing where they go.