Written by In the first 24 hours after a python devours its massive prey, its heart grows 25%, its cardiac tissue softens dramatically, and the organ squeezes harder and harder to more than double its pulse. Meanwhile, a vast collection of specialized genes kicks into action to help boost the snake’s metabolism fortyfold. Two weeks later, after its feast has been digested, all systems return to normal—its heart remaining just slightly larger, and even stronger, than before.
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