Hockenheim (Germany): F1 racer Lewis Hamilton has confirmed he is an executive producer of an Hollywood documentary about nutrition and performance to be released in
September.

The five-time F1 world champ said he will appear in the film along with Novak Djokovic, Chris Paul, Arnold Schwarzenegger and Jackie Chan. "Performance is everything and it all begins with having the right kind of fuel in our bodies," Hamilton said on Twitter. "I'm proud to be Exec Producer on The Game Changers. It's a revolutionary documentary movie and I can't wait for you guys to see it." The film, in which Titanic director James Cameron is involved, focuses on veganism, nutrition and fitness and questions the value of meat in a diet. It is directed by Louis Psihoyos.