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By "wavering constantly", what kind of fluctuations are we talking about? Do you perceive clear differences in your cardio fitness level when it’s up or down? Did you read the in-app tips for improving your cardio fitness score?
Dominique | Finland
Ionic, Aria, Flyer, TrendWeight | Windows 7, OS X 10.13.5 | Motorola Moto G6 (Android 9), iPad Air (iOS 12.4.4)
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