From Load to Strain: Dr. Stephen Seiler's Latest Research p.2

In this insightful episode of Athlete’s Compass, Dr. Stephen Seiler joins hosts Paul Laursen, Marjaana Rakai, and Paul Warloski for a deep conversation on breathing as a training tool, recovery as a performance enhancer, and the importance of individualizing endurance training. From nasal-only breathing sessions to the role of sentiment analysis in monitoring strain, the discussion blends science, practicality, and humility. Dr. Seiler encourages athletes—especially the high-performing overachievers—to embrace rest, experiment with their own training, and use available tools (like AI and wearables) to make smarter, more personalized decisions.Key TakeawaysNasal breathing can be a powerful training tool.The respiratory system is trained during high-intensity work—specialized breathing sessions may be unnecessary for some.Nasal-only breathing can increase ventilatory efficiency and reduce total ventilation needs.Training responses are highly individual—what works for one may not work for another.Sentiment analysis (language used in training logs) can reveal internal strain and should be integrated with other metrics.AI and wearables are enabling athletes to treat themselves as “n=1” experiments.The key to successful endurance performance: managing the balance between signal and strain.Coaches and athletes should adopt a "triangulation" model: training load, physiological feedback, and perceived effort.Rest is a performance enhancer, not a weakness.Paul Warloski - Simple Endurance CoachingTraining adaptation and heart rate variability in elite endurance athletes: opening the door to effective monitoring - PubMedReward and Forgiveness: discussing training with champion speed skater Nils van der PoeMarjaana Rakai - Tired Mom Runs - Where fitness meets motherhood.