I have a question that I have been woundering for a while. But with TMJ why do I get so tight? Like my jaw musces get so tight along with my neck and shoulders. I do do stratches/exercises but it doesn't seem to get me looser. It's pretty sad to have TMJ when I am only 25. I have had it for a few years now. I don't even know how I got TMJ in the first place.