Researchers say office workers and other people who sit down a lot must exercise for one hour a day. This is to increase their chance of living longer. Doctors keep telling us that sitting down all day will make our life shorter. Researchers say that sitting in a chair all day is as dangerous as smoking or being overweight. Sitting for eight hours a day could increase the risk of dying early by up to 60 per cent. However, there is good news for people who sit at a desk all day. One hour's exercise each day can cancel the risk of an early death from sitting all day.

The research was published in time for the Olympic Games. Researchers hope this will get people to exercise more. Being inactive increases the risk of getting heart disease, diabetes and cancer. Watching TV all day is one of the worst things we can do. This is also because we will also eat unhealthy snacks. Office workers should get out of their seat more often. A researcher advised people to: "Take a five-minute break every hour, go to the next office, go upstairs to the coffee machine, go to the printer." He added: "Build physical activity into your everyday life."