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Show Wrong Beliefs About Exercise and Heart The old belief that the heart In creased In size according to the Increased In-creased amount of work It Is culled upon to perform is a myth. Dr. Ma-thins Ma-thins J. Seifert, Chicago, says lo a study of the effect of exercise upon the heftrt, prepared for the Gorgas Memorial Memo-rial institute at Kansas City. If an athlete's heart increases in size It is not because ot the exercise lie has performed, but because there was something fundamentally wrong with It to begin with Doctor Seifert declares. "It Is now found." he says, "that the predisposition of the heart to en largement is the result of Infectious diseases, sucb as scarlet fever, pneumonia, pneu-monia, rheumatism and too strenuous exercise in youth, as well as to physic traumas. "Exercise for pleasure causes no enlargement of th heart, but on the contrary produces a strengthening of j the whole body and. normally,- even a smaller heart." j |