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How do fitness trackers measure your heart rate?

Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.

Mar 14, 2025 - 15:02
 0
How do fitness trackers measure your heart rate?
Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.
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