If my BP does not increase when I stand up, I grey out instead. So I thought that was normal.
One thing I’ve realized in the last ten years or so is that BP measurement is anything BUT precise anyway. Trying to automate it hasn’t helped. I’ve had a med tech using a machine take multiple readings in quick succession, and seen the systolic number vary by ~30 points. The superannuated metrologist in me recoils in horror at this sloppiness.
I monitor my own BP with an Omron automated cuff. I strive for repeatability. Get up in the morning, head to the breakfast table, and rest ten minutes. Then I take three readings about five or six minutes apart and average them. I do that about three or four times a week. It’s been great help adjusting BP meds and dosages. I’ve got data going back 25 years. I didn’t take so many readings in my fifties, but began taking more readings in my sixties (now 70).
I bought an Omron wrist BP unit and use it when I’m hiking hard. I get lots of variability when I’m exercising hard, so I’m not sure that information is worth much.