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How a Basketball Coach's Body Reacts to a Heated Game

Michigan State's coach Tom Izzo allowed "Nightline" to track his vital signs under stress of a loss.
03/19/2014

Transcript for How a Basketball Coach's Body Reacts to a Heated Game

It's part of all of our lives. Some of us believe we need it in order to maintain our edge, in fact, but any doctor will tell you too much stress is down right toxic. And so tonight, an experiment.... See More
This transcript has been automatically generated and may not be 100% accurate.
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