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David Scott explores the dangerous -- and sometimes deadly -- practice of weight-cutting in MMA. Bryant Gumbel checks in with Jon Dorenbos, an NFL player who was forced to retire early due to a rare heart condition.
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David Scott explores the dangerous -- and sometimes deadly -- practice of weight-cutting in MMA. Bryant Gumbel checks in with Jon Dorenbos, an NFL player who was forced to retire early due to a rare heart condition.