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Rustar Manzano answer :

When you exercise you breathe, and your heart beats faster so that it can pump more blood around you body to keep you moving. When you work out, you are moving/using all the muscles of your body. Muscles require oxygen and energy (calories) to continue to respond to your directions like walking or jogging or any other kind of activity. To ensure that the energy and oxygen reach all the necessary blood vessels, the heart would have to increase its pace. The more strenuous your workout more would be the oxygen requirement and hence the brain would instruct the heart to beat faster to ensure that the muscles are not fatigued because of lack of oxygen. This is why your heart starts beating faster when you indulge in any form of physical activity. The more strenuous your activity, higher would be the heart beat rate.

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11y ago
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12y ago

The heart is a muscle which is constantly contracting and relaxing. the force of this contraction and relaxation causes the blood to rush through the veins and arteries of your body. another way of looking at it is if you think of the heart as an air pump. when you squeeze and let go of the air pump, that causes air to move. it is the same with the heart.

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10y ago

The brain sends a signal to the sinoatrial (SA) node of the heart, initiating a wave of contraction throughout the heart. Blood flowing into the heart's right atrium, then into the right ventricle, then through the pulmonary artery to the lungs to exchange out carbon dioxide waste and fresh oxygen inflow.

That blood is then pumped back into the heart via the pulmonary vein into the left ventricle. It's pumped into the left atrium, and out the aorta to the rest of the body.

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11y ago

It beats by you staying healthy and strong:]

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9y ago

The human heart functions as the head of the circulatory system. The heart pumps blood into all parts of the body.

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11y ago

All of the muscles in your heart contract, and it is the valves opening and shutting in your heart that makes the bump bump bump bump.

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14y ago

...blood

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Q: What is an explanation of how the heart beats?
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