Science of Running Fit and Fast: Achieving Robustness in Training
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Feb 10, 2026 They explore the 'fit but flat' paradox where great aerobic markers fail under race chaos. They contrast metabolic fitness with neuromuscular coordination and late‑race speed loss. Practical ideas include variable drills, hill bounds, overspeed work, and mixing coordination with endurance throughout training. The conversation emphasizes learning movement under fatigue and simulating race unpredictability.
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Aerobic Gains Can Erode Anaerobic Capacity
- Heavy aerobic training can reduce anaerobic capacity and fast-twitch recruitment.
- Steve Magness explains lower post-max lactate as a sign of lost fast-twitch recruitment, not improvement.
Define Robustness By Pattern Stability
- Robustness means movement and coordination patterns hold under speed, fatigue and perturbation.
- John Marcus cites Josh Kerr and Cole Hawker as examples of athletes with robust late-race performance.
Include Short, Fast Work Regularly
- Do include short sprints and anaerobic work during training, not just at the end of a block.
- Steve Magness recommends 60–100m sprints or speed-endurance to preserve neuromuscular readiness.