I think it is C but i am not sure hope it is right
As a guideline to ensure that you have all the physical components of the body practiced to develop different parts of fitness.
Answer:
<em>It affects the central nerve system.</em>
Explanation:
<u><em>It affects the biochemical and physiological functions.</em></u>
<u><em>Hope this helped! </em></u>
<u><em>-Justin</em></u>
