Conceive the head, chest, and pelvis as blocks
Treated the three big masses of the torso as solid boxes with a front, a side, and a top, before any contour or muscle was drawn.
Why it matters · A box has planes, and planes turn in light and in space. Starting from the block means the figure has volume and direction from the first mark, so the detail later sits on a form that already reads in three dimensions instead of a flat outline.
George Bridgman, Constructive Anatomy, the masses of head, chest and pelvis conceived as blocks, 1920
Drive the masses in perspective before drawing detail
Set the blocks turning and tilting in space, in perspective, and settled their direction and tilt first, leaving anatomy and surface for last.
Why it matters · Most figure drawing dies because the detail is correct but the big forms do not sit in space. Bridgman reversed the order. Get the masses pointing the right way first, and a roughly drawn arm on a true structure beats a beautifully shaded one on a collapsed one.
George Bridgman, Constructive Anatomy; The Human Machine, 1920
Wedge the masses into each other
Saw the body as masses that interlock by wedging, one form driving like a wedge into the next, the high point of one mass meeting the low point of its neighbour.
Why it matters · Wedging is how Bridgman kept a built figure from reading as stacked boxes. The opposed, interlocking masses give the pose torsion and life. It is the idea that turns a constructed figure into one that twists and carries weight.
George Bridgman, Constructive Anatomy, "the effective conception is that of wedging", 1920
Find the movement through the whole figure
Tracked a continuous movement, an active line or plane or mass running through the pose, so the figure was built around its action, not assembled part by part in isolation.
Why it matters · Bridgman taught the figure as anatomy for action, not the inert anatomy of a medical plate. The eye follows a moving line, plane, or mass, so the drawing is organised around where the body is going, which is what makes a pose look alive rather than posed.
George Bridgman, Constructive Anatomy, "the eye in drawing must follow a line or a plane or a mass", 1920
Teach from a repeatable formula
Reduced figure construction to a compact, teachable system of masses, planes, and wedges that a student could carry to any pose, and drilled it for about four decades at the Art Students League.
Why it matters · A formula is a double-edged thing, and Bridgman knew it. The Lloyd Goodrich line is that he could not have taught without one. The system gives a beginner a way in on any figure. The cost, which his own school records honestly, is that the formula can override what is actually in front of you.
The Art Students League of New York, LINEA essays on Bridgman (Goodrich on the "formula")
Subordinate the model to the construction
Drew from the living model in the League class, but bent what he saw toward the underlying blocks and movement rather than copying the surface of the pose.
Why it matters · This is the discipline and the risk in one move. Drawing the construction, not the appearance, is why his students could draw a convincing figure from imagination later. The honest caveat, made by later League teachers, is that a stylised construction can read as mechanical if observation is dropped entirely.
The Art Students League of New York, LINEA essays (the Jerry Weiss "too mechanical" critique)