“We call nutrition ‘invisible training’” Gemma Bes, Clinical and Sports Nutritionist We catch up with Gemma Bes, Rafa Nadal’s personal nutritionist who works at the Rafa Nadal Academy and Juaneda Sport Health Centre, and ask about the importance of diet for a sportsperson and how we are affected by what we eat. What are the key factors in an athlete’s performance? After genetics and training, nutrition is key. In fact, a good diet can cover not only basic needs for macro- and micro-nutrients to prevent