<span>The body needs oxygen for cellular respiration. When doing strenuous activity, such as lifting weights, the mitochondria cannot get enough oxygen. Without oxygen to act as an electron receptor, the body creates lactic acid to "reset" coenzymes to continue respiration.</span>
Answer:
relax kalang punta ka rito sa lugar nato
Explanation:
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A system made of bundles of long fibers
The answer is TRUE ( if your doing the true or false thing)
It affects how it flows threw your arteries