Originally Posted by Charles Schleuter

Basically I believe it's important to always inhale to the maximum. I know there are a lot of players who suggest to only take in the amount needed, but I maintain that you have the same amount of tubing in which to make the air vibrate at the appropriate speed in order to produce whatever note but also to have the potential for having the maximum resonance, dynamic control, range of color (timbre), as well as phrasing and nuance. It is also necessary to provide the body (and brain) with the oxygen necessary to function efficiently. It's been my experience both personally and with students, that all playing deficiencies can be attributed to insufficient air. I could go on in more detail but I hope this gives an overview.