We all know walking is good for you but experts are now saying that a brisk walk can be better for you than jogging or an hour in the gym. A recent study by Cambridge University found that a brisk twenty minute daily walk reduces the risk of early death by 25 per cent. A major study in the USA has demonstrated that walking for just half an hour a day can dramatically reduce the risk of Alzheimer’s disease, depression and Type 2 Diabetes. Dr William Bird was one the first GPs