What Caffeine Actually Does to Your Brain [Video]

For all of its wild popularity, caffeine is one seriously misunderstood substance. It's not a simple upper, and it works differently on different people with different tolerances—even in different menstrual cycles. But you can make it work better for you. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/4nSDf5fW5PI/what-caffeine-actually-does-to-your-brain

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