[hlnx1]

Garmin, Polar, Coros, Apple Watch… which one do you use, and which feature do you actually trust?

• Wrist or chest strap for heart rate?
• Do the VO₂max and recovery estimates match how you feel?
• Happy with the GPS accuracy?

What the number does and doesn’t tell you: VO₂max: what it is and isn’t.

[Author]

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