This is the story of an ordinary bloke from the UK who at age 38 found himself overweight, unfit and about to become a father. Inspired by the birth of his twin girls, Chris O' Brien set out to run between two lamp-posts, a feat he could barely achieve.

Listen to Chris's incredible journey to discover what it takes to turn your life around and what happens to your body when you try to win a 12-hour endurance race.

In a quite remarkable life-transformation, Chris is now the founder of two new businesses focussed on trying to help individuals get better at running and uses some quite different techniques.