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I would say your heart because if you didn’t have a heart you would mostly be dead and your heart does a lot of this for our bodies. I hope this help I’m sorry if it doesn’t.

Answer: The most important muscle is the heart. It pumps out 2 ounces (71 grams) of blood at every heartbeat. Daily the heart pumps at least 2,500 gallons (9,450 liters) of blood. The heart has the ability to beat over 3 billion times in a person’s life.

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