Aimee Albert talks about starting running, running to music and sharing her running goals on Facebook.
In 40 years, 90 per cent of the population of the UK will be overweight or obese.
Britons are among the laziest people in Europe, according to a study which found that almost two thirds of adults are putting their health at risk through a lack of exercise.
Information from Royal College of Paediatrics and Child Health.
Information from NHS Choices.