Randy exercises more than most people and continues to train even when he has a cold or an injury. His friends joke that Randy seems addicted to exercise. According to the Focus on Neuroscience in Chapter 2, Randy's compulsive exercising:
A) may be due to the involvement of his brain's opioid system and the production of endorphins during and immediately after exercise.
B) is an indicator of decreased levels of dopamine and increased risk of Parkinson's disease.
C) may be due to the involvement of his limbic system and the production of acetylcholine.
D) is an indicator of the overproduction of dopamine and an increased risk of schizophrenia.

Question

Quizplus · Accepted Answer

Randy's compulsive exercising may be due to the involvement of his brain's opioid system and the production of endorphins during and immediately after exercise. Endorphins act as natural painkillers and can induce a feeling of euphoria, which may contribute to Randy's addiction-like behavior towards exercise.

Randy Exercises More Than Most People and Continues to Train