Same here. My focused problem solving is powered by my legs: if stuck, I need to pace around with a notepad. Can't do that in an office without weird looks.

When I was a smoker, I took a smoke+coffee break with a notepad to problem solve, that is more accepted in corporate life but I've dropped the habit.

I was a cigarette smoker too. I was doing the same thing and it worked wonderfully but I had to stop the nasty smelling habit. However, those vice forced brakes every 1-2 hours or so made me a lot more productive overall. Current office culture is very much desk bound, walking around, is not encouraged at all, and if I squint I could sort of see it in the product itself