I first heard about her focus on diet many moons ago when reading Robert Haas' book on sports nutrition Eat to Win, which I think may be one of the first books of its kind for a general audience, coming as it did after the fitness boom of the 70s. What made it unique was it focus on quality carbohydrate, rather than protein, and emphasizing low fat eating. It's out of print now, but I found an old copy and was surprised at accurate it still remains. It is quite close to McDougall and Pritikin it its practice. In the book he mentioned some of the athletes he worked with such as Navratilova. She is quoted as having benefitted greatly from the plan, but until recently I did not know that she is truly plant based, and credits it for her success. While not being a tennis fan, I have been impressed with very long career, still winning championships into her 50s! So I was quite interested in this little video that credits outstanding longevity in a highly competitive sport to her love of plant power!