Caffeine 101 from NatGeo

Nearly 90% of the United States population has at least one caffeinated beverage every day. Learn about the chemistry of caffeine, how it causes increased alertness and focus, and how caffeine is capable of causing overdoses.

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Healthy note for today? About 400 milligrams of caffeine, or 4 cups of coffee, is considered normal or healthy consumption. Good to know…right!?