Sitting up straight is not the best position for office workers, a study has suggested.
Scottish and Canadian researchers used a new form of magnetic resonance imaging (MRI) to show it places an unnecessary strain on your back.
They told the Radiological Society of North America that the best position in which to sit at your desk is leaning slightly back, at about 135 degrees.
The correct posture in the picture above makes me wonder if it would lead to a hunch back.