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Videos / Biology & Medicine / How Caffeine Works







How Caffeine Works
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How Caffeine Works
Ever wonder how caffeine gives you an energy boost? This video will show you.


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Rating: 3.0 / 5 (919 votes)
Posted by nova on July 9, 2007
Hits: 16043

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Comments

Posted by kimmy on July 9, 2007 at 6:15 pm
I rarely drink coffee.
I'm still wide awake during the day.
I drink a lot of water.
Is there caffeine in bottled water?
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