I find myself in a permanent state of being physically muscularly tensed. I can let it go, when I think about it, but it seems to be my default state now. It can't be good for me. Arms, neck, thighs, stomach . . . .
I have similar experience. It's truly awful.
In my upper body it is especially bad: tensed and locked shoulders, neck, and jaw. The headaches and other pain sensations in my head as a result are debilitating.
For years, somehow I was under the impression that the default positioning of the jaw was to be shut, so I started forcing myself to shut my jaw, which is basically clenching.
Now, after years and years, my dentist who I had been going to since I was a child, over 30 years, sold his practice and the new dentist was like, "Yeah, this isn't good, your jaw should be slightly open, which is a natural relaxed state."
So I've been trying to unlearn the clenching and it's a constant exercise of paying attention.