Robbie Renwick was part of the Great Britain team that won gold in the 4x200m freestyle relay at the 2015 World Championships in Kazan. 

On this week’s Best in the World with Richard Parr, Robbie explains the changes he made to his life and training that helped him become a World Champion. 

He also tells Richard about racing against Michael Phelps, his goal setting and his love of kite-surfing. 

You can learn more about Robbie at @robbierenwick on Twitter. 

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