Running is simple — but we’ve made it noisy.
Most runners collect more data than they can interpret:
pace
zones
heart rate
workouts
plans
But performance doesn’t come from precision.
It comes from the overall training you actually experience over time.
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More than a decade ago, researchers looked at a simple question:
What actually predicts marathon performance?
The strongest signals weren’t advanced metrics.
They were:
average weekly training load
average training intensity
sustained over multiple weeks
In other words: what you did — and for how long — mattered more than how it was labelled.
One run doesn’t change fitness. Patterns do.
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Today, it’s easy to obsess over:
zones
lactate
perfect sessions
perfect plans
But for most runners, improvement doesn’t come from better prescriptions.
It comes from experiencing a higher, sustainable training load within real life constraints.
The danger isn’t data. It’s outsourcing judgment to it.
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It’s time to reclaim your data.
Meaning:
listening your body to guide intensity
looking at trends, not single workouts
valuing consistency over perfection
letting adaptation emerge instead of forcing it
Your body already knows how to adapt.
The question is whether your tools help you see it.
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This is the idea behind Kaizen.
Not a rigid plan.
Not daily instructions.
Just a system that:
understands where your fitness is now
understands where you want to go, and
reflects the training load needed to get there
So you can train in the way that works best for you.
