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because (i think) you're using your muscles more, which makes them tired, so more blood needs to be flown to them. your heart pumps faster because it has to pump more, and you breath faster because the purpose of blood is to bring oxygen throughout your body. so the harder you work, the more tired you get, and that's why it happens... i think. this isn't a definite answer.

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Q: When you run your heart beats faster and you breathe faster why does this happen?
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Related questions

What happens to your heart rate when you exercise and why does this happen?

Your heart beats faster because it is pumping blood around your body faster


What does the heart do when you exercise?

Your heart beats faster and you breathe more because your blood cells need more energy to give to your muscles


Why does a runner breathe heavier she is exercising than when she is asleep?

Well, when you are running, your heart beats faster. when your heart beats faster, taht means it is trying to get more blood to your body. when you breath, it helps that prosses. when you are asleep, you are not working hard, are you? it is as easy as that.


Is your pulse slower the faster your heart beats?

No, your pulse spikes every time your heart beats. So your pulse is basically the same as your heartbeat. If your heart beats faster, your pulse is faster.


What body processes change during and after exercise?

When you exercise you breathe heavier and faster, your heart beats faster, your muscles hurt, and you sweat. These all relax when you finish exercising.


Why do your heart beats faster when you excercise?

The heart beats faster when we exercise because the heart pumps more blood and the body also needs more blood


Why does your heart beat faster?

because it just beats faster


What would happen to your circulation during exercise?

More blood is pumped around the body because the heart beats more. When the heart beats more the that makes the blood move around the body faster :)


When you breathe faster why does your heart beat faster?

yes, it does!


Why does your heart pump blood faster when you breathe faster?

Heart rate: is the number of times your heart beats in a minute. This depends on certain factors, for example: if you are a young and healthy adult, your heart rate should be normal (for example 72 beats per minute). However, if you are a person under high levels of stress (but are otherwise healthy), your heart rate may become higher (for example, 94 bpm or higher).


What organ is smaller but beats faster?

the heart...


What organ beats faster if you are smaller?

heart