On our Christmas edition of the Best in the World with Richard Parr we are joined by the three-time canoe slalom World Champion David Florence. 

David has also won 3 Olympic silver medals. 

They talk about the differences between rowing and canoeing, controlling emotions and the dangers of the sport. 

David also discusses studying Mathematics with Physics, learning Russian and training to be an astronaut.  

You can follow David on Twitter @david_florence. 

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