Encore: A study of this champion's heart helped prove the benefits of exercise
More than a 100 years ago, doctors thought that too much running or other vigorous activity could harm us. Marathoner Clarence DeMar proved them wrong.
Source: wusf.org
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More than a 100 years ago, doctors thought that too much running or other vigorous activity could harm us. Marathoner Clarence DeMar proved them wrong.
More than a 100 years ago, doctors thought that too much running or other vigorous activity could harm us. Marathoner Clarence DeMar proved them wrong.
More than a 100 years ago, doctors thought that too much running or other vigorous activity could harm us. Marathoner Clarence DeMar proved them wrong.