Jill Bennett talks to teenager Madeline Jackson from Weybridge talking about taking on the huge challenge of running 52km last Sunday to raise awareness of undiagnosed heart conditions just two weeks after her brother Alex, a 15-year-old rower, athlete and karate black belt underwent open heart surgery. She is raising money for national charity Cardiac Risk in the Young. CRY is a charity that supports young people diagnosed with potentially life-threatening cardiac conditions.