Transplant children compete in British Transplant Games
10 August 2014 Last updated at 08:50 BST
Hundreds of people who've had life-saving transplants have been competing in the British Transplant Games in Bolton, north-west England.
The aim of the annual sport event is to help people get their fitness back after having a transplant.
Organisers also hope the games will raise awareness about organ donation.
Competitors take part in sports including archery, football, tennis and athletics over four days.
Jenny went along and met 11-year-old Charlie, who had a kidney transplant donated from her granddad.