Without the right fuel at the right time, an athlete’s performance inevitably suffers. Understanding the critical roles of nutrition and hydration in sport are explored in this fresh, revealing programme for senior secondary physical education audiences. Viewers are taken on a diary-type journey as Ironman Triathlete Bradley Conder prepares for the “big day”. A leading sports dietician examines how energy sources – particularly carbohydrates, proteins and sporting drinks – affect athletes at three different stages: pre-competition, during competition and post-competition. The meticulous nature of a high-performance diet are highlighted throughout the programme, illustrating just how far sports science has come and the constant demands the next generation of athletes will face.