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exercise strenghtens all the muscles in the body. the heart is one. the harder you work, the harder the heart works to pumo blood around to other muscles and that makes it stronger. the heart pumps the blood with oxygen to the other muscles that need it

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15y ago
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15y ago

The increased heart beat/heart rate allows blood and oxygen to flow more freely.

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14y ago

Because it pumps blood through your heart more.

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Q: Why is regular physical activity important in keeping a healthy heart?
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