If you have back pain here are a couple of exercises to fix it that can be done in just minutes a day
http://www.youtube.com/watch?v=8szJuzPt-sg
http://www.youtube.com/watch?v=-5HxDpIIwS0
Sitting in a spinal flexed position is actually more stressful on the back then standing and lots of truckers have rounded shoulders due to all the sitting and driving. These exercises help stretch the tight muscles around the upper back.