One thing that has ALWAYS plagued me...even when I was at my best and most "in shape" (playing wise) in college was that I have NEVER been able to play for very long without my embouchure getting tired and giving out. I would become tired way before anyone else. My embouchure literally caving in and unable to even get a sound out after only a very short time.
Has anyone else had experience with this? Have I been doing something wrong this whole time and have never realized it? Any solutions?