Caffeine

 Caffeine is a stimulant. This substance stimulates the central nervous system. Caffeine is safe within limits. Caffeine is often found in tea, coffee, chocolate, soda, and energy drinks. 

                                                                                           (“11 Things You Should Know about Caffeine”)

Works Cited

“11 Things You Should Know about Caffeine.” Www.cbsnews.com, www.cbsnews.com/media/things-you-should-know-about-caffeine/.

“Caffeine | University Health Services.” Uhs.princeton.edu, uhs.princeton.edu/health-resources/caffeine#:~:text=Caffeine%20is%20a%20central%20nervous.

Harvard School Of Public Health. “Caffeine.” The Nutrition Source, 30 July 2020, www.hsph.harvard.edu/nutritionsource/caffeine/.