I'd never heard of a treadmill desk until I read about it on my friend Arthur Slade's blog. But once you think about it, it makes a lot of sense.
Art's a writer (you can see his books at his website) so rather than spending all day sitting at his computer, he decided to walk at his computer. Here's a snip from the blog post:
Since I, as a writer, tend to sit for hours and hours and hours, this idea of a treadmill desk kept coming back to me. Finally, I decided to take the plunge. Dr. Levine's desk is $4500 or more, so I frugally made my own (for about $500). I'd read about home built treadmill desks (just Google "treadmill desk" if you want to learn more about treadheads) and followed several fine examples (here's a great blog). I bought a Tempo Evolve treadmill from Canadian Tire, and, oddly enough, the arms on it were perfect for attaching a shelf. It runs quietly and fits nicely into my office.
Art's got a great post about his new desk (which he'd been using for about a month when he wrote the post back in early February. And he made a video of himself on the thing.
This is such a cool idea. It's the kind of thing you often hear people speculate about, but full credit to Art for actually doing it!
I don't have a treadmill, but I do own a rowing machine. I wonder if I can adapt that?