A marathon runner is nearing the end of a race when her body starts to produce endogenous opioids.These chemicals will ______.

Question

Quizplus · Accepted Answer

Endogenous opioids are natural painkillers produced by the body that can reduce feelings of fatigue and pain. They can help the marathon runner push through the final stretch of the race. They do not cause muscle spasms, induce vomiting, or cause shortness of breath.

A Marathon Runner Is Nearing the End of a Race