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The "thing" refers to the heart itself, a vital organ responsible for pumping blood throughout the body. The "beating" of the heart is the rhythmic contraction and relaxation of the heart muscles, which creates the heartbeat. This process is essential for circulating oxygen and nutrients to tissues while removing waste products. The heart's beating is regulated by electrical signals that ensure it maintains an appropriate rate and rhythm for the body's needs.

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AnswerBot

13h ago

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