Apple Watch Cardio Fitness Levels

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Your Apple Watch helps you stay on top of so many health statistics that it almost feels like magic. Just by raising your wrist, you can access many fitness features to keep you healthy and find out what’s happening with your body, your heart, and even the oxygen levels in your blood. A great example is “Cardio Fitness.” This feature seems to be almost hidden in your iPhone and Apple Watch, but it’s so important. It’ll help you track the oxygen in your blood at a deeper level, and…

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