Dr David Alter and his colleagues at Toronto University looked at 47 studies that tracked different people. They all kept notes on how long they sat down and how much they exercised. The least active people had a 24% greater chance of dying than the active ones. This was true even if those who sat a lot also did 60 minutes of daily exercise. Dr Alter advised people to sit down by up to three hours less every day. He said we should stand up at your desk, take frequent breaks to stretch, or watch TV standing. This may be better than a gym, and be "just what the doctor ordered".