1. Always warm-up before and cool-down after a performance.
  2. Rest your voice when you do not need to use it; especially before and after a performance.
  3. Seek and continue formal voice training.
  4. Use adequate melodic patterns for your speaking voice. Pitch and intensity changes help convey meaning, too. Articulate words precisely for better intelligibility.
  5. Be careful with “character” voices and “emotional” releases. Always use good technique, and if it feels uncomfortable, STOP.
  6. Come in early to be evaluated for any voice problems.
  7. Always make sure you have the proper amplification and monitors.
  8. Be aware of body posture when performing.
  9. Get plenty of rest and stay hydrated.
  10. Sing age and voice-appropriate repertoire.
  11. Make sure costume and props do not affect your voice.
  12. Be aware of the effects of medication on your voice. Career longevity is dependent on maintaining a healthy voice. Make wise decisions and protect yourself.
  13. See “rules for a cold”
  14. Prolong your career. Make wise decisions and protect your voice.
  15. If you are hoarse, rest your voice as much as possible. If your voice does not recover within a few days, seek evaluation. If you have to perform, and your voice is hoarse, try to see laryngologist or voice pathologist urgently to rule out a serious injury.

Overall the big message here is to rest, warm-up, amplify and a repertoire is vital to your performance.