If there is one discipline where the dead help the living, it is in medicine both through organ donations, and also in research on cadavers into new healing techniques. Jesús García Bragado is an athlete, he’s among the global elite of racewalking. He could never have imagined that a corpse would influence his life to such an extent when - following a career full of success and sacrifice - starting to walk with a limp threatened his sporting future.