At the age of three, Hal Gregersen, author of "The Innovator's DNA" and Executive Director of the MIT Leadership Center, witnessed his father being rushed to the hospital after suffering a heart attack. As a result, Hal became fully committed to practicing a heart-healthy lifestyle. However, when the same thing happened to him, Hal failed to recognize his life was in danger because he had never asked the right question: "What are the symptoms of having a heart attack?" What Hal did
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