After four hours of running in a marathon, Hyacinth was completely exhausted and every muscle in her legs ached.She didn't think she could continue, but then she felt a sudden rush of relief as all her muscle aches seemed to disappear.This "runner's high" that Hyacinth experienced was most likely the result of her brain triggering the release of:
A)dopamine
B)endorphins
C)GABA
D)acetylcholine

Question

Quizplus · Accepted Answer

The sudden rush of relief that Hyacinth felt is likely due to the release of endorphins. Endorphins are neurotransmitters that are released during exercise and can lead to a feeling of euphoria, also known as a "runner's high." Dopamine is also associated with pleasure and reward, but endorphins are specifically linked to the feeling of relief from pain or discomfort. GABA and acetylcholine are not typically associated with the "runner's high" phenomenon.

After Four Hours of Running in a Marathon, Hyacinth Was