<prompt> Exercise is also prescribed as an adjuvant treatment for depression. Most probably is acts by:Increasing pulse pressureImproving hemodynamicsRaising endorphin levelsInducing good sleep  <response>: Ans. is c ie Raising endorphin levels Ref: Kaplan and Soddoks Comprehensive Textbook of Psychiatry 7e, 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. 