Back problems related to computer use

While searching on the net I found this very interesting article http://www.annelisabeth.com/blog/archives/000379.html, it tells us about the many damages that the human body can suffer from using too much computers. Is very clear that computers have helped our lives is saving time, communication, business, but at the same time it is very harmfull if is not use with coution, spending too much time sitting down can cause us chronic back problems because of been in one position for so long and not resting moving around. This article gives some interesting tips in how to keep ourselves in good shape if we are constantly in the computer/internet area.