World No.1 Novak Djokovic has become so convinced that a gluten-free diet has been the key to his success that he has reportedly even put his pet dog on a gluten-free regime.
According to The Independent, 'Serve To Win', Djokovic's book about the much-publicised diet, has been the talk of tennis since its publication, with the Serb saying that his health has improved markedly since he discovered his intolerance to gluten, a protein found in wheat.
According to Djokovic, he has even put his pet dog Pierre on a gluten-free regime, adding that because to that, his dog has also become fit.
However, Djokovic does not seem to be making many converts to his diet, with Danish player Caroline Wozniacki saying that she is not going to put her pet dog on such a diet as she wants to him to enjoy the life he has.
According to Wozniacki, her dog Bruno would not be going gluten-free, adding that she would rather see him become fat and happy than being too thin and miserable.
Djokovic's diet has also been dismissed by other tennis stars, with Spanish ace Rafael Nadal saying that it is a passing fad, while Wimbledon champion Andy Murray admitted his intolerance with the diet.