Practicing things is very inconvenitent.

I have to do ninety minutes of clarinet practice today, because I didn't practice at all this week. That's ONE HOUR AND THIRTY MINUTES! I didn't practice before, and I did really well. After I started practicing, my air support went. I scored 100s on performance quizzes-- UNTIL I PRACTICED. No one has ever proved to me that I need to practice to be good. So I don't see why I must.