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What atom gives your heart energy to beat?

User Meduvigo
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Answers. explanation; -how fast the heart beats depends on the body's need for oxygen-rich blood. at rest, the sa node causes your heart to beat about 50 to 100 times each minute.
User Ganjeii
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love because ever notice when your with someone you have a crush on your heart beats faster so your welcome

User Artemiy
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