Last year Drs. S. A. Levine, Burgess Gordon and C. L. Derick of the Medical School of Harvard University studied the changes in the hearts of long distance runners. They found that men, who had been doing long distance running for years, did not develop enlargement of the heart. They found, also, that the amount of breathing space in the lungs did not seem to affect in one way or another the running ability of the men. This year the same observers studied the men who attempted...
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