Childhood obesity is a major threat to the health and wellbeing of the next generation but Elaine Wyllie the inspirational head teacher of St Ninians Primary School in Stirling, with not a penny in funding, has transformed the health, happiness and work levels of the children at her school.

She had one really simple, really clever idea.

At some stage during the day, every child in each class goes out to walk or run a mile around the school field. As we know across the UK cases of childhood obesity are rising but there is none at St Ninians.

I heard a great radio interview recently with Mrs Wyllie in which she stressed the benefits came from the children getting out in the fresh air.

I can vouch for that. Bury Bootcamp re-launched three weeks ago and I have signed up to sessions on all the weather pitch at Bury St Edmunds Rugby Club at an unearthly hour of the morning. It’s been cold, windy and wet but it is so much more invigorating to be outdoors as dawn breaks than to be indoors in a gym.

I gather many other schools are copying Mrs Wyllie’s idea. I very much hope it will take off in our primary schoolsmileteacer