It used to be strenous for me to play extensively. I really don't have too much of a problem anymore though. Of course if I'm testing myself things can tense up but when I practice and just goof off I feel perfectly comfortable... I really hate practicing. Ok, so I exaggerate it a bit, but it's so damn boring from time to time because everything is so much slower and cautious than real time jamming. But if I dont' want to suck then it's a small sum to pay.