Best selling author John J. Ratey, MD is an Associate Clinical Professor of Psychiatry at Harvard Medical School and an internationally recognized expert in Neuropsychiatry. He has published over 60 peer-reviewed articles, and 11 books published in 17 languages. With the publication of  Spark-The Revolutionary New Science of Exercise and the Brain, Dr. Ratey has established himself as one of the world's foremost authorities on the brain-fitness connection.  

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