1 Sip water or sugarless drinks often. 2  Avoid drinks with caffeine, such as coffee, tea, and some sodas. 3  Caffeine can dry out the mouth. 4  Sip water or sugarless drinks during meals.
persuasive - intended or having the power to induce action or belief; persuasive eloquence; a most persuasive speaker; a persuasive argument. convincing - causing one to believe the truth of something; a convincing story; a convincing manner.
By Grace Fleming. The purpose of a persuasive speech is to convince your audience to agree with an idea or opinion that you put forth. First you'll need to select a side on a controversial or argumentative topic, then you will write a speech to explain your side-and convince the audience to agree with you. You can produce an effective persuasive speech if you structure your argument as a solution to a problem.