Melissa has just completed running a marathon. She is so elated that she feels little fatigue or discomfort. Her lack of pain is probably the result of the release of

Question

Quizplus · Accepted Answer

Endorphins are natural painkillers that are released during strenuous exercise, such as running a marathon. These neurotransmitters bind to the same receptors as opioids, such as morphine, and can produce feelings of euphoria and reduce the perception of pain. This is likely why Melissa feels little fatigue or discomfort after completing the marathon.

Melissa Has Just Completed Running a Marathon