"stepping away from the desk is seen as a loss of valuable work time, time we could otherwise use to tackle the next item on our to-do list"<p>This sounds a bit of an unhealthy culture.<p>The idea shouldn't be to look busy at all times, but rather, to work on problems and solve them, solving them don't have to happen in front of the screen, sometimes, doing something else entirely allows you to arrive at a solution faster.<p>I'm working in an office, so it's probably easier for me than someone who works at home and might already feel some additional pressure to "prove they're busy and not just doing laundry and watching Netflix".<p>I take whatever amount of breaks I happen to take on any particular day, some days, I only go for bathroom and lunch, other days, I spend more or less hanging around other peoples offices to discussion work (if work happens to be interesting) or whatever is interesting. Some times, I go and turn on the arcade and have a game or two (Tetris Grand Master 2 Plus is my favorite).
I might take a cup of coffee and go outside and just sit for a bit and stare into the sky.
I know some colleagues who don't do this, and look busy much of the time, but none of the data I have available to me seem to indicate that they're being mor e productive.