Over 100,000 metric tons of caffeine are consumed around the world every year. That’s equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven’t had enough sleep — but it can also raise our blood pressure and make us feel anxious. 

QUESTIONS: 

1. Define caffeine. What are the benefits and disadvantages of caffeine?

2. What makes you think coffee keeps me awake? 

3. Are you addicted to caffeine? If so, is this a problem?