Explain why whenever a person needs extra energy he breathes faster
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because he will get more oxygen on breathing faster and that extra oxygen will cause more oxidation of food in our body and thus creating more energy.
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An athlete needs to supply extra energy to his muscle cells which have worked hard during running. For this, he breathes faster and deeper so that more oxygen is supplied to the cells. This speeds up the breakdown of food and as a result, more energy is released.
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