Nearly once an hour, I think. I don't keep close track. Plus going out for a run mid-afternoon, weather permitting.
I've found that one of the largest benefits of working at home is that I can get up to pace whenever I feel like it without disturbing any cubemates. I find pacing much better at clearing the head than deliberately going out for a walk, because I do it subconsciously without mentally unloading the problem. I noticed the same effect at work too: when I had a big office to myself, or when my cubemates weren't in to work, I tended to get much more done.
I find I can't concentrate if I've been sitting at the computer for more than 2-3 hours straight. I really do start to feel the lack of exercise.
I've found that one of the largest benefits of working at home is that I can get up to pace whenever I feel like it without disturbing any cubemates. I find pacing much better at clearing the head than deliberately going out for a walk, because I do it subconsciously without mentally unloading the problem. I noticed the same effect at work too: when I had a big office to myself, or when my cubemates weren't in to work, I tended to get much more done.
I find I can't concentrate if I've been sitting at the computer for more than 2-3 hours straight. I really do start to feel the lack of exercise.