Voice breaking?

Question:

Voice breaking?

This week, my sister was having trouble singing notes she normally hits with ease. Her voice started breaking. Why might this be happening? She's 18. Could being tired contribute to it? Thanks.

Best Answer - Chosen by Asker: Yes, fatigue can contribute to voice breaking. I myself, currently, is expressing voice breaking because of too much singing yesterday. I have some observed causes of voice breaking below that you might find helpful. Following are some suggestions to prevent voice breaking.
Probable causes:
- Stress and fatigue
- Lack of sleep
- Dehydration
- Respiratory infection
- Singing too much beyond your vocal range
- Too much belting (might push you to shouting)
- Improper way of singing (like using voice implanted on the throat and not on the diaphram)

Ways to prevent:
- Have proper sleeping habits
- Drink lots of water
- Vocalize because singing extensively (like solmization and range scaling)
- Sing with the proper technique
- When you feel tired or you feel unease while singing, STOP! and rest your throat. You might just aggravate your vocal cords and might develop vocal nodes.
- Exercise regularly (it helps in developing endurance of the body expecially if you will incorporate belting in your singing)