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kozerog [31]
3 years ago
6

Will give a brainiest for the answer thanks :)

Biology
1 answer:
Stella [2.4K]3 years ago
4 0
Her body systems will have to work harder. Specifically, she will be breathing heavier because the muscles and organs in her body will be demanding more oxygen. Her body will also be demanding more oxygenated blood, I think. The blood will be circulating more as a result, too. Areas of the body that are working, such as her running legs, will have more blood circulating to them I believe. There is more blood flow to your heart, too.
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