“It’s bad luck to say good luck on opening night,” of course, but how did we land on “break a leg”? There are a few explanations. In Ancient Greece, audiences didn’t clap at performances, they stomped. The more they stomped, the more chance there was of breaking a leg; this tradition reappeared in Elizabethan England when audiences would stomp their chairs and, again, more stomping would break the leg of the chair. Wishing someone “break a leg” is wishing for thunderous applause.