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Fuzzy brain? Improve your attention span (cnn.com)

It's no accident that you concentrate best when you're really engaging in something, like watching a good movie, or doing something challenging, like learning a new card game. Concentration occurs when the brain's prefrontal cortex, which controls high-level cognitive tasks, is awash with the right cocktail of neurotransmitters, hormones, and

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   53 days ago by George  +7 


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