Every note, phrase, exercise, warm up - evrything you play involves your entire body. When you stand up a million events occur from your brain to your body that you never realize. So it is with playing. The difference is that playing is NOT NATURAL. It becomes natural by years of conditioning. Not to make you stronger or higher or louder but to make you consistent in a all aspects of playing.
Here are a few of the areas we take one at a time in practice to develop. As we progress more and more of these work in synergism .
Breathing in and out Controlling the type and amount of air taken in and released Setting the lips Setting the tongue Setting your posture Visualizing the moment Hearing the sound before you play Tuning Establishing a core to the sound Musical phrasing And on & on on & on on & on on & on on & on on & on on & on on & on...
So practice when you practice then put practice aside when you perform. Do not become a victim of paralysis via analysis. gR