ZBrush as a Character Design Tool - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 11

Gesture is important because it instills a figure with a sense of spring or life. It can mean the difference
between what looks like a lifeless, stiff 3-D model and a living character. Gesture is especially important
when posing figures. By being aware of the direction or thrust of the pose, you can effectively set up a
dynamic composition for your final image ( Figure 1-10 and Figure 1-11 ). Figure 1-12 shows a character
that has been posed in a dynamic position with special attention paid to maintaining exciting lines of action
throughout the body.
Figure 1-10: Gesture lines drawn over a sculpture to illustrate the action in the pose