Yea what I realize is that coffee (caffeine) has an effect on how I practice and how I play. I find the alertness useful. I have yet to try red bull or sugar energy drinks. But now the question is, should i take them (coffee etc) before piano exams?
Drinking coffee for hat purpose is a very bad idea because you don't really count the amount of cups you devour for the sake of 'waking up' and working better. But actually you will wake up and work much better if you just excercise every morning. And in the long run it is beneficial to your health while coffee will slowly see to its destruction. Be careful.