Yes, just had my violin exam done, and i really couldn't stand up, or do anything, i got so stressed that i couldn't think in anytihng,if i hadnt one of those, i think i would have suicided. (weird, since people usually get nervous before a performance, but in my case, i get nervouse after), and that's annoying =(
Have you ever been hit by a car/motocycle...etc.etc.