> Pes has recently been studying workers in one of the island’s regions of longevity, Seulo (population around 1,000). He discovered one group of women who had spent their working lives seated, but nonetheless reached a great age. They had been working treadles (pedal-powered sewing machines), which meant they had regularly burned sufficient calories to derive the longevity benefits of remaining active. (Lowndes’ Gymnasticon, which works like a treadle, is starting to look a little less ridiculous as a solution for sedentary workers.)

Interesting idea. I tried a walking desk for a while but it damaged my typing performance and I disliked it because it seemed to distract me and cause constant small head movements. Exercise bikes are the wrong form-factor to work with desks, so they are right out. But 'treadles' would be perfect for fitting under a desk (of course) and would provide the constant low-level activity necessary for the health benefits without being a 100% activity like walking (you have to walk) or causing any head movements (since you are still sitting).