Lots and lots (and lots) of small subconscious movements throughout the day. Many thousands of them. Moving your heard around, tilting it a bit, wiggling your toes, rolling your shoulders, scratching an itch, etc.

Anecdotally, I believe I have a personal example of the sort of thing that changes. I went from being ultra-sedentary to exercising 5+ days a week over the past year. My body had enough of these tics that they had long since passed over the subconscious and unnoticed level into "why the fuck do I keep bouncing my legs around all the time when sitting or in bed." Now, I never do. After years of trying, I stopped making any sort of intentional effort to stop - and even things like weighted blankets, etc., in the past did nothing.

Now, I just don't do it. I fidget less at my desk while working. I make a whole lot less 'random' movements for no discernible reason.

Add up enough of all these tiny things over the course of a day, things you probably don't even realize you're doing, and each tiny fraction of a calorie expended eventually pushes you to the levels you see with more regular exercise.

(Now, of course, exercise is hugely important for a variety of other health factors)

Glad to hear that exercize has worked for you.

>Add up enough of all these tiny things over the course of a day, things you probably don't even realize you're doing, and each tiny fraction of a calorie expended eventually pushes you to the levels you see with more regular exercise.

Fidgeting will obviously burn some calories. But I find it hard to believe that fidgeting will burn the same amount of calories as sustained exersize.

I have heard some suggestion that the extra energy is being burned at a cellular level (causing inflammation). But would be office work get hot if that was the case?