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Many data-driven runners have a grasp on common heart rate metrics, like resting heart rate, maximum heart rate and heart rate zones. But there’s another, often undervalued data point worth keeping ...

Among the valuable health features in watchOS is something Apple calls Cardio Recovery. Follow along for a detailed look at what the feature is, how to track it with Apple Watch, why it’s valuable, ...

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That daily five-mile run might be your mental sanctuary and the cornerstone of your fitness routine, but it could also be secretly undermining your health goals. While we’ve had “cardio is king” ...