Also, the website for The Sitting Solution is very interesting. I learned a lot about the dangers of sitting.
Then, I looked up Chad Walding of The Sitting Solution on youtube.com and found a bunch of videos with short, easy ways of overcoming the constant C-curve that we create in our spine when we sit -- at the computer, driving the car, texting (not at the same time, of course)...
For those of you in chronic back and neck pain, I hope that you can glean some useful information from the videos. I did. :-)
Have a happy and healthy day!