Comment by ajolly | Hacker News Reader

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Comment by ajolly | Hacker News Reader

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I wish one of the new activity monitors would give me HRV data, not just heart rate.

What does HRV (heart rate variability) data allow you learn? I'm guessing medical insights of some sort, but what exactly?

Recovery from previous sessions - http://www.t-nation.com/training/heart-rate-variability-trai...

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