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The lungs allow you to breath and when your playing sports you have to be able to breathe 

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The lungs allow you to breath and when your playing sports you have to be able to breathe 

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How does the heart keep up when you do physical activities doing them at a high intensity level?

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How does the heart keep up when you are breathing heavily?

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When you don't have energy what makes you still be able to push yourself?

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How does the heart adjust the beating rate according to the amount of activity you are doing?

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How does the heart adjust the beating rate according to the amount of activity you are doing?

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Can you keep on doing activities and such if you don't have any or much energy?

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What system is most common when playing sports?

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Why does our heart pump really fast when playing a sport? K.A

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How does the heart and lungs adjust to the amount of movement.

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why do we run out of breath when we run?

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Why do people sometimes run out of breath when doing physical activity?

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why does are heart pump really fast

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How do your wounds heal after a period of time when it indented your skin.

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How do your wounds heal after a period of time when it indented your skin.

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The nervous system allows you to feel an outside force.

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Why does the heart pump the blood and not the other organs?

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why do you get cramps when you breath faster and when your out of breath?

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How fast does the heart pump when playing a sport vs. relaxing?

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How does our brains work

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What does your body do to give you energy?

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What does your body do to give you energy?

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how does the heart not stop pumping blood?

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what happens to our stomach when we do not eat?

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what happens to our stomach when we do not eat?