Objectives: An acute bout of exercise typically leads to short term exercise induced hypoalgesia (EIH). but this response is more variable in many chronic pain populations. including knee osteoarthritis (OA) and fibromyalgia (FM). There is evidence of autonomic nervous system (ANS) dysfunction in some chronic pain populations that may contribute to impaired EIH. https://parisnaturalfoodes.shop/product-category/bearberry/