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A comment on Show HN: Every Breath You Take – Heart Rate Variability Training. Parent comment

Re:Show HN: Every Breath You Take – Heart Rate Variability T... by kbre93 on Monday September 18, 2023 @04:10AM (#37553566)
It currently only works with a Polar H10, which has a heart rate monitoring (ECG) and an accelerometer (for measuring breathing rate through chest expansion)
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