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2014-06-24T19:19:54+08:00

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It is because our body is inactive and need less nutrients and oxygen
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2014-06-24T20:57:11+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Because when we are at rest...our body is calm and our hear didn't need more oxygen than when we are tired...
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