Fitness trackers aren’t very accurate at measuring heart rate — and that can be dangerous – The Verge

Fitness trackers aren't very accurate at measuring heart rate — and that can be dangerous
The Verge
Fitness trackers aren't very accurate when it comes to measuring heart rate, especially if you're doing a hard workout, researchers say. This could be risky for people who might push themselves too hard, and frustrating for those who wonder why a short …
How Accurate Are Fitness Tracker Heart Rate Monitors?Live Science
New study claims Apple Watch is the most accurate wrist wearable for fitness tracking9 to 5 Mac
Your Fitness Tracker Isn't the Best Way to Measure Heart RateHealth Essentials from Cleveland Clinic (blog)
CBS Local –Ubergizmo –TIME
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