Renowned sports nutrition expert Prof. Graeme Close discusses the essential principles of maximizing athletic performance through a food-first approach, debunking supplement myths and emphasizing the three T's - timing, type, and total intake. He explores the complexities and challenges of sports nutrition, including iron deficiency, ergogenic substances, and sodium bicarbonate as a game-changer. Prof. Close emphasizes the importance of a 'food first' approach in sports nutrition, advocating for holistic health and performance optimization.