Tag: endurance training
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The History of Interval Training: From Gerschler and Zatopek to Modern HIIT
The structure of interval training is nearly a century old, established by coaches through observation long before the physiology was formalized. This article traces the arc from fartlek and Gerschler’s Freiburg method through Zatopek and Astrand to the modern HIIT research of Tabata, Gibala, and the Norwegian 4×4.
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My Garmin Says My VO₂max Is 52. What Does That Actually Mean?
VO₂max is the most visible number on your fitness watch — and one of the least understood. Here’s what it means, how accurate your wearable estimate really is, and why the trend matters more than the number.