long runs

Motivation vs Muscle: Why You Might Not Be as Tired as You Think

p50f / August 13, 2025

What if the biggest limiter on your next run isn’t your legs, your lungs, or your lactate-but your mind? Two dominant models attempt to explain what makes endurance athletes stop: These ideas aren’t just academic-they show up on every long run, every race, and even in training. The Central Governor Theory (CGT): Developed in the […]

Central Governor Theory, endurance training, Fatigue Models, long runs, mental fatigue, Motivation, RPE, Samuel Marcora, Tim Noakes

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Training Mindset

Are My Heart Rate Zones Wrong? A Nose-Breathing Experiment

p50f / April 2, 2025

I recently wrapped up a 120-minute treadmill run that was, by all accounts, a success. I felt energized, fueled, and strong from start to finish. But something curious lingered in my post-run reflection: while my heart rate data suggested I was working above Zone 2 for extended stretches, I was able to comfortably breathe through

breathing techniques while running, heart rate zones, long runs, nasal breathing, older runners, running by feel, running recovery, Zone 2 training

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Heart Rate Training, Self-Experimentation, Zone 2 Running