Habits
Wearable Estimated VO2 Max Skepticism
Wearable estimated VO2 max skepticism notes watch cardio fitness is algorithmic—trend for motivation OK, but lab gas exchange and habits beat nightly score panic.
Wearable estimated VO2 max skepticism treats watch and ring cardio fitness numbers as algorithms—not lab gas exchange. Runs, wrist fit, illness, and software updates swing scores several points.
Useful for trend if they increase walking; harmful if they trigger orthosomnia or junk miles. Confirm big swings with Cooper tests or graded walks when needed.
Do not compare Apple to Garmin as moral worth.
Common questions
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How accurate is watch VO2 max?
Accuracy varies—often useful for personal trends, poor for absolute precision. Skeptics pair trends with how stairs feel and clinician-guided tests when stakes are high.
Related terms
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