Dr Jenny Lim worked as a GP in Grangemouth, Falkirk, for over 20 years and developed a strong interest in working with young people to promote health and wellbeing.

Working with 11-year-olds from local primary schools, colleagues and Falkirk Community Trust, Jenny was behind the first Big Fit Walk, a series of 30-minute walk for all ages and abilities.

In this episode, Jenny talks of her pride at being so heavily involved in the development of an event which was fun, free, inclusive and accessible.

She also recalls the moment she learned about the power of physical activity and explains why she believes walking is "the solution to health challenges we must face".

The Big Fit Walk is now proudly managed by us. It sees hundreds of short walks running across the country each June and is now in its 16th year.