Though it has its place, this popular training approach may not align with the goals of most casual runners.

Polarized training is based on a clear 80/20 distribution: 80% of your training at low intensity (max HR 65–75%) and 20% intense (at or above the anaerobic threshold), while the middle zone is largely ...

A strength coach shares science-backed running tips, from the 80/20 training rule to recovery, stretching and choosing shoes, ...

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