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Is too much exercise bad for your heart?

Name: Is too much exercise bad for your heart?
Uploaded: 2016-02-25T16:07:57+0000
Duration: 1 min 43 s
Description: Research finds that long, intense exercise can lead to heart abnormalities. Dr. Nesochi Igbokwe from the New York University Langone Medical Center joins CBSN to discuss.