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this is good stuff. i tried a 4.5-day fast (salt + water only) a few years ago and it seemed good overall. read a lot, uninterrupted. among other things it is really something to just know deeply about yourself that you can survive multiple days without food
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a few months ago @sashachapin told me he tried to publish a piece on fasting, but the outlets he pitched demanded an explicitly critical frame of silicon valley. the science doesn't support that frame, so we published the piece as intended on pirate wires. piratewires.com/p/inside-silic
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I've done a 7 day fast before, and a few 3 day ones what I've learned is that the second day/night of not eating is for me the worst. it gets better after that. not keto adaptation - it happens when I'm already in ketosis
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the strange thing is, I don't have the same experience if I eat something on that day, even only a couple hundred calories (e.g. egg, mackerel)
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In recent years (didn’t used to be this way for me) I find that there’s a thing that hard about the beginning the fast, but there’s a different thing that gets harder for me as a fast goes on, which I think is mostly just increased nausea as my blood ketones get higher.
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