Answer:
before the competition do work outs for a short period of time and increase the work out times getting longer longer each time
Explanation:
Correct answer choice is :
<h2>C) Endorphins </h2><h2 /><h3>Explanation:</h3><h3 />
Endorphins are endogenous opioid neuropeptides and peptide hormones in people and other creatures. They are generated by the primary neurotic system and the pituitary organ. The term endorphins indicate a pharmacological action as exposed to a particular chemical formulation.