What else should you, or shouldn't you do?

• Avoid using dairy products like milk, cheese, butter, chocolate, or ice cream when you are going on the phone or know you will be doing a lot of talking. They coat the vocal folds and can distort the quality of your voice. They also often lead to congestion and the frequent need to clear your throat. Avoid beverages with caffeine like tea, coffee, hot chocolate, or soft drinks. They can contribute to tension in the vocal mechanism. Try room temperature water or even hot water (like the temperature you would have for tea, but without the tea), with or without a slice of lemon, to quench thirst and encourage good speaking skills.
• Avoid eating or drinking things that are either very hot or very cold. They can interfere with flexibility and clear speech.
• Avoid shouting, screaming, or straining your voice. These kinds of activities can damage the vocal folds and lead to loss of strength and clear speech.
• Sit or stand comfortably and straight when you speak on the phone. That is the best position to allow a clear flow of air and to permit good control and quality of your sound.
• Aerobic walking for 15 to 20 minutes up to three times a week helps to strengthen your voice and build muscle. Concentrate on breathing with your diaphragm for the first five minutes of your walk.