I can imagine riding a racing bicycle is taxing on your back, but how about a 'normal' bicycle where you're sitting upright? Here in The Netherlands (one of the

I can imagine riding a racing bicycle is taxing on your back, but how about a 'normal' bicycle where you're sitting upright? Here in The Netherlands (one of the most bicyle-dense countries in the world...) these are the most common. See for instance http://www.gazellebikes.com/collection-bikes/city-bicycles/sporty/2014/chamonix-excellent?type=men http://www.gazellebikes.com/collection-bikes/city-bicycles/s... or http://www.batavus.nl/stadsfietsen/Blockbuster-7.htm http://www.batavus.nl/stadsfietsen/Blockbuster-7.htm. It's perfectly normal to ride them in your business suit to the office. They're much, much more comfortable than a racing bike. By the way, have you considered alternative healing therapies like acupuncture? And are you sure your desk/chair is ergonomically adjusted to your body? Good luck!