The fitness industry’s 80/20 gospel is copping heat

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Zone two training has surged in popularity over the past few years. Exercise scientists say we may have oversold its importance for weekend warriors.

Three years ago, I fell hard for the fitness world’s shiny new toy: zone two. After reading US doctor Peter Attia’s bestselling health and longevity bible Outlive and tuning into countless health podcasts, I diligently slowed my pace on most runs to a comfortable shuffle, one that allowed me to still hold a conversation.

The sales pitch was seductive: zone two training, loosely defined as an intensity that allows you to just about speak in full sentences without gasping for air, was a way of improving your fitness while minimising your risk of injury.

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