Backache from the work chair?  
Backache and the resultant ailments used to be the most common cause of premature invalidity. The reason was often office seating without sitting ergonomics. Today, it is known that backache is the first (but serious) warning about an incorrect posture or badly made swivel chairs. This is the point when you should start thinking about buying a new swivel chair.

 viasit has a cure for backache

With the right sitting ergonomics, your work chair will not cause you any backache. Make sure your swivel chair precisely and individually fits your measurements. And if you get up from your chair more and more, for instance because you’ve placed the phone on your sideboard, then you will be doing some extra good against backache. We want you to stay healthy!

Here you will find a lot of information about backache:

And here are some good exercises against backache: