Rav Belsky told me that yoga is assur regardless of intent, since the actions are AZ derived. Mah she’ain kein acupuncture, which he had done to himself. He said that a refuah that may have had some indirect association with avodah zara ideas (not actions) is ok. It would be like if a doctor wrote that the spirits told him that a certain herb helps diabetes.
The psak i know for sure, the reasons i gave above are to the best pf my memory but I’m not 100% certain.