IMPORTANT Do not practice finely skilled movements after you are tired for you will begin to subs

“IMPORTANT: Do not practice finely skilled movements after you are tired, for you will begin to substitute gross motions for finer ones and generalized efforts for specific ones. Remember, wrong movements tend to supervene and the athlete’s progress is set back. Thus, the athlete practices fine skills only while he is fresh. When he becomes fatigued, he shifts to tasks employing gross movements designed principally to develop endurance.”

Lee, Bruce. Tao of Jeet Kune Do. Black Belt Communications, 2011, loc. 39.