xoxomoexoxo12 xoxomoexoxo12

20-09-2016
Health

contestada

Cardiovascular exercise helps improve the health of the _____.

brain

muscle fibers

blood vessels

blood

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eugeneharris560 eugeneharris560

20-09-2016

It helps improve the health of the muscle fibers. I hope this helped.

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20-09-2016

the muscle fibers because your working your whole body

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