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Re:Show HN: Every Breath You Take – Heart Rate Variability T... by cancelself on Saturday September 16, 2023 @10:07PM (#37540778)
Re:Show HN: Every Breath You Take – Heart Rate Variability T... by steve1977 on Sunday September 17, 2023 @01:50AM (#37541905)
You can get HRV data after a “mindfulness” session, but not in realtime during the session, at least as far as I know. That’s what I meant with not so easily.

I also found that the results don’t match measurements with a HR strap very well, at least for me.