In his quest to define 'sporting greatness', double Olympic champion Alistair Brownlee has spent nearly 4 years interviewing and training with some of the greatest minds in sport to discover what it takes to become - and remain - a champion.
Featuring:
Ian Botham - Mark Cavendish - Alastair Cook - Alex Danson - Richard Dunwoody - Donna Fraser - Chris Froome - Anna Hemmings - Denis Irwin - Michael Johnson - K