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MARATHON RUNNERS’ BODIES APPEAR TO BE DEVOURING BRAIN TISSUE, SCIENTISTS SAY

MARATHONERS’ BODIES MIGHT BE TAPPING INTO AN UNLIKELY ENERGY SOURCE. Talk about using your head. In a recent — though yet-to-be-peer-reviewed — paper, scientists posit that marathon runners’ bodies might turn to brain tissue as a mid-race energy source, gobbling down the mind’s protective myelin layer and turning it into fuel. Myelin is a fatty...