Alison speaks to a man preparing for his first marathon having shed half his bodyweight. He hasn't stopped running since February, when aged 58, he put on his trainers.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.