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Blood cells and a brain to control it . It's that simple .

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14y ago

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Why does you heart sometimes need to work harder?

Your heart may need to work harder when your body requires more oxygen. For instance, if you are exercising, your heart rate increases to keep up with the muscles' oxygen requirements.


Where does children in need people work?

in british heart foundations


Why won't Feral Heart work?

You probably need to download the patch from the homepage.


Why doesn't your heart need to work as hard in space?

Because theres no gravity.


Why does the heart beat faster when exerciseing?

As you exercise, the muscles need more oxygen to work. The heart beats faster to get the oxygenated blood from the lungs to the muscles. The harder you exercise, the more oxygen the muscles need, the faster the heart beats.


Why does your body need more oxygen when you work out?

Because you are making the heart work faster,so it has to pump more blood around it.


How and why does your heart rate speed up when you do excises?

Obvious answer your heart and your muscles need plenty of oxygen and if you don't have enough oxygen, your heart needs to work harder so you don't die.


When was Work of Heart created?

Work of Heart was created in 1982.


What will happen to your resting heart rate as your heart gets stronger?

With exercise your resting heart rate should be reduced as your heart is more effecient at pumping blood and does not need to work as hard.


Why do blood has to move around the body continously?

If you don't have blood pumping around the body, the heart wouldn't be able to get everything it need in the blood stream to work and if the heart doesn't work most of your muscles won't work either causing you to die. :(


What did William Harvey's observation and experiments show?

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Describe how blood blood vessel and heart work together?

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