In this episode we pull back the curtain on two often-underappreciated yet hugely decisive traits in endurance triathlon: durability and efficiency. We’ll explore what it takes to sustain output and hold technique deep into a long race, why your efficiency matters more than you might think, and how you can train the physiology of fatigue resistance. You’ll hear how metabolic, neuromuscular, cardiovascular and brain-effort systems all play a role. We'll view all this through pro triathlete and Working Triathlete coach Mitch Ott’s standout day at Ironman Chattanooga as a live example of these principles in action.