We are sitting more than ever before - and our sedentary lives are having a big impact on our long-term health. In this episode, Michael stands up to the allure of the couch and reveals the science behind how just standing up - without even doing any exercise - can burn more calories and lower blood sugar levels. With Dr John Buckley, Michael explores how the experience of astronauts in space proves how important the force of gravity is on our bodies - and how standing up can help keep our bones and muscles strong.