This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous Nervous System, Subject name: Physiology
[{'content': 'Exercise is also prescribed as an adjuvant treatment for depression. Most probably is acts by: \nSelect and explain. \nA. Increasing pulse pressure, B. Improving hemodynamics, C. Raising endorphin levels, D. Inducing good sleep', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' ie Raising endorphin levels (Ref: Kaplan and Soddok\'s Comprehensive Textbook of Psychiatry 7/e, p106, 107)."It is well known that exogenous opioids (eg heroin, morphine) can induce a euphoric mood state and that exercise increases release of endogenous opioids and is associated with mood enhancement - Kaplanb endorphin is the principal endogenous opiods.The best documented function of endogenous opiates is in analgesia and alteration of pain perception.', 'role': 'assistant'}]