It's kind of hard (if you're not into exercise) to burn more than 400 daily. So given that I burn ~1580/day by default an extra 300 is not such a big incentive to exercise. It's just an extra small meal/snack.

Using http://www.myfitnesspal.com/tools/bmr-calculator, it seems that "by default I burn around" 1.9kcal per day. However I've found it quite easy to hack 700 of them into a day just by exercising for 10 minutes and having more walking meetings. In your case, do you consider walking exercising?

So you burn a total of 2600 kcal day and 700 is from the 10 minute exercise and walking meetings? Sounds like the exercise has to be super intense? Or tons of walking. Well I consider all non-bmr' burn exercise. I rarely even leave my house and when I do it's usually 3 blocks away, so under 20kcal. Fidgeting would probably contribute more lol.

I actually burn more than that (I average somewhere above 3000kcal), but the 2600 that I mentioned is from mostly passive activities. Did you know that Nelson Mandela walked 7 miles in his cell every day? I don't think working at home should stop us from being more active.

The thing with me is that I'm not so bullish on health (or other) benefits inherent to exercise. So if I was to go out of my way and exercise i'd only do it to eat more. And yea walking around a room is fun, especially if you're locked up in a cell :-D I do that once in a while when I get excited about a new concept.