As soon as the children at one primary school in Stirling hear the words “daily mile”, they down their pencils and head out of the classroom to start running laps around the school field. For three-and-a-half years, all pupils at St Ninian’s Primary have walked or run a mile each day. They do so at random times during the day, apparently happily, and, despite the rise in childhood obesity across the UK, none of the children at the school are overweight. The daily mile has done so much to improve these children’s fitness, behaviour and concentration in lessons that scores of nursery and primary schools across Britain are following suit and getting pupils to get up from their desks and take 15 minutes to walk or run round the school or local park. Elaine Wyllie, headteacher of St Ninian’s, said: “I get at least two emails a day from other schools and local authorities asking how we do it. The thought of children across the country running every day because of something we’ve done is phenomenal.” One in ten children are obese when they start school at the age of four or five, according to figures from the Health & Social Care Information Centre, and, in the summer of 2015, a study found that schoolchildren in England are the least fit they have ever been. Primary schools have therefore been quick to note the benefits of the daily mile. It has been introduced