Mon Prof Augmenté
Running and Resting
Age 12 · Health
When you run, your muscles need more oxygen. Your heart beats faster and your breathing speeds up to send oxygen and nutrients to your working muscles.
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In the picture
- Lungs: they expand and work faster to take in more air.
- Heart: it beats faster to pump blood around the body.
- Blood vessels: they carry oxygen-rich blood toward the legs.
- Leg muscles: they receive more blood and nutrients while running.
Examples
- Climbing stairs quickly makes you breathe harder and feel your heart beat.
- Playing football or dancing makes your legs work and your heart pump faster.
Key takeaways
- Working muscles need more oxygen and nutrients.
- The heart and lungs speed up to meet that need.
Quiz: Running and Resting (Age 12)
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What happens to your heart and breathing when you run?
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What do working muscles need more of during running?
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What do the lungs do when you run?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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