I’m in a vehicle for a couple of hours a day for 1-hour stretches. I have commuted with some real pile of crap cars and trucks. I purchased a used dodge charger and for the first month, I could hardly get out of the dang car my back hurt so bad.
One day, I was driving and started thinking about my posture. Is there anything keeping me from being straight? I made a few seat adjustments that had minor positive impact. I then realized my problem. For years I always drove with the sun visor down because the defrost dried my eyes out. I realized that the distance between the dash and the open visor was minimal. I was actually crouching my body down to see through the gap. Yes, it was simple enough to put the visor in the closed position.
Dont overlook the obvious sometimes.