Coordination

Training for skill [coordination] is purely a matter of forming proper connections in the nervous system through practice [precision practice].  Each performance of an act strengthens the connections involved and makes the next performance easier, more certain, and more readily done.  Likewise, disuse tends to weaken any pathways that have been formed and makes doing of the act more difficult and uncertain [constant exercises].  Thus, we can attain skill only by actually doing the thing we are trying to learn.  We learn solely by doing or reacting.  When learning to form pathways, be sure the actions are the most economical as well as the most efficient use of energy and motion. 

-- Lee Jun-fan (1940 - 1973), commonly known as Bruce Lee, Hong Kong American martial artist and actor, Tao Of Jeet Kune Do (1975), p. 46