how caffeine works
Madeleine Nguyen July 23, 2003 General Purpose: To inform listeners about Caffeine. Specific Purpose: To describe to my listeners what Caffeine is and how it works Central Idea: To define what Caffeine is, Caffeine in the diet, and Caffeine in the body. ... What is Caffeine—medically known as Trimethylxanthine and in pure form it’s a bitter white crystalline. ... Caffeine in the Diet A.