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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 anonuser123456 on Sunday September 17, 2023 @07:41PM (#37550488)
Get a Kardia 6 leed ecg device (around 150 USD). They even have one that fits in your wallet.

Heart rate is not enough. You need to look at the QRS and P wave via ECG.

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