By Dr. Vic Weatherall
The best way to prevent the problems associated with sterno-symphyseal syndrome or computer back is to sit up straight. Back supports that help maintain your proper lower back curve can also be effective. An excellent idea is to take 10-second micro-breaks every 20 minutes and adopt Brugger's "postural relief position."1

Try doing the same movements while standing.
If you practice this conscientiously, within a few weeks you should feel yourself sitting taller in your chair, with decreased muscle tension and fatigue.