Nathan Priestly , 21 , grew from from 26 stone to 13 pounds over two years . A failed suicide attempt at 18 was his catalyst for change . Nathan , from Norwich , sells drugs and alcohol for the homeless . He now wants to show his fellow inmates that he 's defeated them .
Nathan Priestly , 21 , slimmed from from 26 stone to 13 stone over two years . A failed suicide attempt at 18 was his catalyst for change . Nathan , from Norwich , traded alcohol and takeaways for the gym . He now wants to show his school bullies that he 's defeated them .