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New Study finds Cardiorespiratory fitness (VO2 Max) measured from activity data on your iPhone to be quite accurate - MyHealthyApple
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Is this normal with an Apple Watch? Been running 5 days a week for 2 months yet my vo2 max continues to get worse : r/AppleWatch
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Sudden drop or change in cardio fitness score (VO2 max) on your Apple Watch and iPhone Health app? - MyHealthyApple
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