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How to measure HRV
Chest straps like the Polar H10 are the gold standard for HRV measurement. Wrist-based devices (e.g., Apple Watch) aren't perfect but are surprisingly decent for raw data — if you use them correctly.
Most dedicated HRV apps (HRV4Training, Elite HRV) are clunky. Apple Health has a good UI
Quoting Ezra
"I think there's a useful analogy to draw here. I think a lot about an article Mark Danner wrote in the New York Review of Books many years ago about the Iraq War, and it's an article that has stuck in my mind forever, because
a poem about human suffering
"The Suffering Are Both Pointless and Destined"
I found this sentence in my notebook; I don't know if I wrote it or if it's from a book.
I asked ChatGPT to write a poem about it; I think it did a good job -
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