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Why it's never too late to get in shape: Dr. Natalie explains

A new study found that regular exercise can actually reverse years of bad habits. NBC medical contributor Dr. Natalie Azar tells Hoda Kotb and Keir Simmons that “a sedentary lifestyle will stiffen your heart.” She says high-intensity exercise can help reverse the effects of aging.

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Why it's never too late to get in shape: Dr. Natalie explains

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Why it's never too late to get in shape: Dr. Natalie explains

Play Video - 2:40

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