I find myself explaining the effects of sitting position and the relative pressure it places on tissues in your lower back on a daily basis. Although below is an ad for a chair company, it represents the research evidence pictorially better than anything else I have been able to find. (Disclaimer: I am not selling these chairs). As you can see in the picture, slouching while sitting at your desk can put a huge amount of pressure on your discs between your vertebrae. Most lik