Chiropractors
I have for about 30 years. Some are really good and some will cause more damage than good. I damaged my neck back in the mid 80's and finally found one that really fixed my neck then he retired. I last one I saw re-damaged my neck and now I'm looking at probably having surgery which scares the crap out of me.
Get in tune with you body and don't let them do un-needed adjustments. I have had them fix problems that no one else could and the doctors just wanted to keep me on pain killers which I hate.