I think I recognise this guy....!
"Two years ago, Aaron Howlett was so lazy he had chips delivered from the shop next door.
On one occasion, despite having already eaten three main courses from a Chinese take-away, he was still hungry. So he bought another meal from a stranger in the street.
It was being unable to play with his niece Ellie without breaking into a sweat, feeling breathless and suffering chest pains which marked a turning point for Aaron.
And it led him to improve his health so much he was able to run the London marathon. ....."
more - http://news.bbc.co.uk/1/hi/health/6547659.stm