The proper timing of a motion can also contribute greatly to the feeling of size and scale of an object or character. A giant has much more weight, more mass, more inertia than a normal man; therefore he moves more slowly. Like a bowling ball, he takes more time to get started and once moving, takes more time to stop. Any changes of movement take place more slowly. Conversely, a tiny character has less inertia than normal, so his movements tend to be quicker.