Standing is far, far worse on my body, and it has been since I was in my 30's. Knees. Back. Feet. They all scream from standing still. Sitting? No problems if

Standing is far, far worse on my body, and it has been since I was in my 30's. Knees. Back. Feet. They all scream from standing still. Sitting? No problems if I observe good posture.