i've developed what i think is called bruxism from the stress of grad school, and have to do exposure therapy on myself 18 times a day to make sure that i still have teeth by the time i graduate. i can recognize the triggers: presentations, having to run review sessons/teach classes, in-class exams, and, after all this time, clinical supervision. i don't know how much the working people get this, but it's a horrible feeling to be constantly judged; loving the work is not the same as loving assessment, and the assessment, it never ends.