80/20 Running - Fitzgerald, Matt
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A fitness expert explains how his running program--in which you do eighty percent of runs at a lower intensity and twenty percent at a higher intensity--is the best change runners of all abilities can make to improve their performance.

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Produktbeschreibung
A fitness expert explains how his running program--in which you do eighty percent of runs at a lower intensity and twenty percent at a higher intensity--is the best change runners of all abilities can make to improve their performance.
Autorenporträt
Matt Fitzgerald, Robert Johnson