Hearing a medic's stark warning not to board a plane as he risked dying onboard was the moment Kit Thompson decided to tackle his 24st weight.
Finishing a half marathon in 1 hour 47 minutes this month was the instant he knew he had transformed his body, health and fitness by losing ten stone and taking up running.
Father of five Kit, 46, says: "I'm still in shock at how different I look and how much I've changed.