Well, turns out that those icons of alternative office space — exercise ball chairs — didn’t hold up well with the scientists. You’ll burn at least four more calories per hour (hey, that’s a cookie a day), but it won’t fix your posture.
…a 2009 British study found that prolonged sitting on a therapy ball led to just as much slumping and “poor sitting position” as a desk chair.
Another study last year, by Dutch researchers [found that] the balls produced more muscle activity and 33 percent more “trunk motion.” But they also produced more spinal shrinkage.
“It is concluded that the advantages with respect to physical loading of sitting on an exercise ball may not outweigh the disadvantages,” the researchers wrote.
You’ll have to keep going to yoga.