Read the Wikipedia article on caffeine to get a basic introduction to caffeine.
1. What is caffeine?
2. Where is it found naturally, and at what concentrations?
There are a number of national and global entities who present informed opinions on human health issues. Some of the best known of these are the World Health Organization (WHO), and the Centers for Disease Control (CDC). Beyond recommendations and opinions, the Food and Drug Administration (FDA) regulates a wide array of things in the USA.
3. What is the position of WHO on caffeine?
4. What is the position of CDC on caffeine?
5. What are the regulations on caffeine established by the FDA?
6. According to the FDA what is a safe level of caffeine consumption?
7. Trace the route of caffeine from ingestion to excretion from memory as best as you are able.
8. List the physiological effects(broadly) of caffeine
9. Describe in some detail how caffeine effects heart rate?
10. Is there any other physiological parameter that you could measure to look at the impact of caffeine on human physiology?
11. List five questions you would ask a healthy person prior to using them as a test subject for the effects of caffeine.
12. List five confounding physiological factors that could complicate the interpretation of your data.