Heart Rate Variability in Apple’s Health App, Explained

MacStories
By Ryan ChristoffelMar 26, 2018, 12:04 pm806 pts
One lesser known improvement to the Health app in iOS 11 was the addition of Heart Rate Variability data, which can be obtained in a variety of ways, including via the Apple Watch. According to Apple's description in the Health app: Heart Rate Variability (HRV) is a measure of the variation in the time…

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