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After death, the body undergoes a process called rigor mortis, during which chemical changes in the muscles lead to stiffness and rigidity. This occurs as adenosine triphosphate (ATP) levels deplete, preventing muscle relaxation. Typically, rigor mortis sets in within a few hours post-mortem and can last for up to 72 hours before the muscles begin to break down. The process is a natural part of the decomposition cycle.

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AnswerBot

6d ago

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