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Cold water and your voiceFeatured science projectScience project video


This science fair project was conducted to find out how drinking cold water will affect the ability of a person to sing. The tests were done by comparing the high notes a person can reach before and after drinking cold water.


The singers will be better able to hit high pitched notes before drinking cold water.


Caring for vocal health

Singers make a living with their voice. Hence, they take great care of their voice. For example, they avoid consuming too much of dairy products. They also drink a lot of water and avoid alcohol. Lastly, they try not to smoke.

Dairy products are normally more difficult to digest and as a result the body will produce a lot of mucus. This mucus enters our vocal chords and can negatively affect a singer’s voice. The additional phlegm will also irritate the throat causing the singer to cough and sneeze - and this can cause trauma to the vocal cords. In fact,singers are usually told to swallow their phlegm rather than to clear their throats.

It is important that a singer drinks enough water. Drinking water keeps the body hydrated and the vocal cords, lubricated. This reduces the amount of friction in a singer’s vocal cords and prevents them from  becoming inflamed.

A professional singer should drink more than 8 glasses of water everyday. She should not drink hot water: hot water causes blood vessels in the throat to swell, negatively affecting her vocal chords. When a singer drinks cold water, her blood vessels contract and the her throat becomes dry. Lukewarm water is most appropriate for singers.

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Complexity level:
Project cost ($):
Time required:
It will take an hour to prepare for this science fair project, and 2 hours to conduct it
Material availability:
A musical keyboard, piano or organ is required. The project cost does not include the price of the musical instrument
Safety concerns: