05 - Follow Through & Overlapping action

http://www.danrstack.com/twelve/

When the main body reaches the end of a movement, all other parts will continue to move in order to catch up. Different parts of the body tend to move at different rates. If a character swings back and forth, the head would take longer to reach its end pose than the body. However, the hair would take even longer than the head, due to the fact that it is attached to a part that is already following through and overlapping. This conveys inertia, and makes the movements feel more realistic.