zone 2

2 posts tagged "zone 2".

• 26 May 2026

  Lactate Test Case Study: Garmin Zone 2 Was 17 bpm Too Low

  A 45-minute lactate test in South Wales showed Tayla's Zone 2 capped at 157 bpm, not 140. Her Garmin was wrong by 17 bpm. Here's what we found and changed.

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• 20 May 2026

  Your Zone 2 Heart Rate Is Probably Wrong. Here's How to Tell.

  Most athletes find their zone 2 from the talk test, the 220-age formula, or their watch. All three are wrong for a meaningful share of runners, and you can't tell from the inside which kind of wrong yours is.

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