This is the story of how two skinny lads from west Yorkshire became the best triathletes in the world.

Meet the Brownlees: Olympic Champion Alistair, World Champion Jonny. Brothers, training partners, rivals. They have obliterated the competition and set new standards for swimming, biking and running.

In this revealing, often very funny book they take us inside their world. It's a riveting story of the races and their rivalry, as well as an inspiring guide to swimming, cycling and running. With the Brownlees in your corner, you'll do more than you ever thought possible.