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New to the Apple Watch is this Resting Heart Rate variable normal? My Fitbit hovered around 53-57. The Apple Watch jumps huge increments. : r/ AppleWatch
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How Apple Watch Measures Heart Rate & Its Accuracy Explained
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Check your heart rate on Apple Watch - Apple Support
The new Apple Watch has a heart monitor and the FDA approves
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Apple Watch heart rate guide: How to use all of Apple's HR features - Wareable
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