Internal vs. External Intensity
The discussion highlights the critical distinction between internal and external intensity in running. By closely monitoring lactate levels, elite athletes can optimize their training sessions to maintain a specific internal stress level while pushing their mechanical output. This approach allows for faster running without exceeding physiological limits, challenging the common reliance on pace as a performance metric.In this clip
From this podcast

The Running Explained Podcast
s4/e13 Double Threshold Training, aka "The Norwegian Method" with Dr. Phil Batterson, MS, PhD
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