Limit the amount of alcoholic or caffeinated beverages to a minimum. These types of beverages lead the drinker to urinate more often, drying out the body and leading to a loss of voice.
Drink six to eight glasses of water a day to stay hydrated. This will help to ensure that your voice does not dry out.
Avoid spicy foods, as they can cause stomach acid to move into the throat, damaging the vocal chords.
Exercise regularly to build up stamina and muscle tone. This will also help you to hold proper posture when singing, which improves breathing and leads to stronger singing.
Eat lots of fruits, grains and vegetables. These foods are rich in the vitamins needed to keep the mucus membranes of the throat healthy.
Wash your hands regularly and thoroughly to help avoid catching a cold or flu. Colds and flu can cause an excess of mucus to build up in the throat, which can lead to damaging the vocal chords.
Avoid talking in a raised voice. Talking above a natural level can cause the vocal chords to strain.