Dr. Margo Mountjoy discusses the concept of Relative Energy Deficiency in Sports (RED-S) and its impact on athletes' performance and health. She explains the signs and symptoms of RED-S, screening methods, and treatment options. The podcast also covers topics such as weight loss while maintaining energy balance, returning to sport post-pregnancy, and the challenges in measuring energy intake and expenditure. Dr. Mountjoy emphasizes the importance of recovery nutrition and the need for strategic energy intake for endurance athletes. Overall, the podcast provides valuable insights into recognizing and reversing low energy availability in athletes.