Line of action and rhythm
A main curve through the figure, with connected secondary curves that organize the pose and show its movement.
What it is
The line of action is the main sweep through a pose. It may run from ankle through pelvis to head, or from fingertips through the spine to the supporting leg. You can describe it as a large C, S, or straight thrust.
Rhythm connects smaller curves within the body to this main line. The rib cage leads into the pelvis, the thigh into the calf, and the heel into the arch and toes. Each curve responds to the one before it.
You find the main sweep first, then build the body around it. Limbs can echo or oppose the line. As you add anatomy and detail, the through-line remains visible so the figure reads as one connected pose.
Why it matters
Line of action and rhythm help you organize a figure as one connected pose. Weak control can make limbs feel attached, reduce the readability of the action, and make small errors more noticeable.
You can check it when
- ✓Draw a single line through a pose before adding details. It shows the pose's direction from the head to the feet or from the hand to the feet.
- ✓Review quick gestures for connected curves between the torso and limbs. In finished figures, trace the line of action and check whether other curves repeat or oppose it.