How do fitness trackers measure your heart rate?

Joan Haslett 14/03/2025 22:23

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

Live Science
Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings…
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Made us kneel like dogs and beat us' - Former Israeli hostage Tal Shoham describes Hamas captivity...

How do fitness trackers measure your heart rate?

Israel, Hamas remain divided on Gaza truce as Egypt mediates hostage talks

‘Lost Confidence’: Netanyahu Announces Plan To Oust Israel’s Domestic Security Service Chief

‘Made us kneel like dogs and beat us’

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