Tobias Haumann, a scientific triathlon coach with expertise in endurance sports, joins the discussion. He dives into the concept of 'round number bias' in training prescriptions, pointing out its drawbacks. The duo explores the cost-benefit aspect of high-intensity intervals, discussing their value in training. They delve into the importance of suffering capacity during races and evaluate the reliability of running power metrics and devices, highlighting the need for individualized approaches to training for optimal performance.