People who sat for eight to 11 hours a day had a 15 per cent increased risk of dying within three years. Research, published in the Archives of Internal Medicine, tracked more than 222,000 people above the age of 45 in New South Wales over a three year period. Disturbingly, the increased risk was not offset by other physical activity during leisure time, meaning those who sat 11 hours a day had the same increased risk of death regardless of whether they jogged for one hour each day or not. BUT breaking up sitting time every 20 minutes with two minutes of light to moderate movement improved glucose metabolism.