With my back, it feels like slowly tightening tightening tightening until nothing wants to move. It stays like that sometimes days, sometimes longer. Sometimes even pulls the ribcage tight so it sort of constricts my breathing.

But it's slow slow slow, not like clench let go, just getting more tight like tuning a thousand piano strings at once, all over my back.

With the legs, not like that, more like RLS then it aches. Not nerve pain that I can figure. But I don't know what else to call it. My legs get a little stiff but the back , you can see it's locked up.

My neck is so bad, we always use that old Steve Martin line - " When I walk into a restaurant, every head turns except mine cuz I have no neck!"