What things should a dancer not do during a performance?

During a performance, a dancer should avoid showing signs of fatigue or discomfort, as it can detract from the overall presentation. It's also important not to break character or lose focus, as this can disrupt the audience's immersion. Additionally, a dancer should refrain from making mistakes obvious; instead, they should strive to maintain composure and continue performing gracefully. Finally, avoiding excessive personal expression that conflicts with the choreography is crucial to maintaining the integrity of the piece.