Caffeine!

The video explores caffeine's effects, sources, and chemistry. It explains how caffeine stimulates the brain by blocking adenosine receptors, leading to increased alertness. Despite its popularity, caffeine is not considered addictive in the same way as nicotine or cocaine. The video also discusses safe consumption levels and the improbability of caffeine overdose.

What are the effects of caffeine on heart rate and blood pressure?

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Explain the difference between caffeine dependence and addiction as described in the text.

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