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[Correspondence] Longevity in elite athletes: the first 4-min milers

Potential adverse consequences of physical overexertion have been periodically debated since the legend of Pheidippides, who was said to have collapsed and died after running 26 miles from Marathon to Athens, Greece, in 490 BC. Concerns about the dangers of extreme physical endurance have extended to modern long distance running (including marathons), rowing, swimming, and cycling.1,2

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