The Ultimate Caffeine Quiz
It wakes you up, gets you going, and may even cure your headache. But how much do you really know about caffeine?
What percentage of Americans consume caffeine every day?
- 50 percent
- 75 percent
- 90 percent
What is caffeine's medical name?
How many milligrams of caffeine does the average 6-ounce cup of coffee contain?
What sleep-inducing chemical does caffeine block from binding to nerve cells?
Which neurotransmitter, or chemical messenger, does caffeine stimulate?
How long does it take your body to rid itself of just half the caffeine you consume?
- one hour
- six hours
- 12 hours
Which is not an effect of caffeine?
- sweaty palms
- dilated pupils
- decreased blood flow to the stomach
How might caffeine help cure a headache?
- increase heart rate
- constrict blood vessels
- increase energy
Which of these is a symptom of caffeine withdrawal?
- shortness of breath
Which illegal drug has a similar effect as caffeine on your body?