We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
but let me let me just cast some doubt on the on the j shaped thing the there there were two main studies on which this whole j curve hypothesis was founded one was the copenhagen uh study and and one was the cooper clinic study
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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basically they statistically adjusted initially at least for things like uh cholesterol levels weight uh blood sugar levels blood pressure because you wanna you know it's meaningless if you compare like we had this you know the non-runners died sooner than the runners but they were also 20 pounds heavier and had all these other risk factors so you want to equalize it but there's a problem that if you equalize it you're a bit you're you're essentially saying well what are the health benefits of exercise if you don't do any exercise because the health benefits are of exercise are precisely in helping you regulate things like blood pressure and blood sugar and controversially but i would say weight also
and they concluded that running too much or too fast was bad that was based on uh there were two deaths in the in the group that ran too fast like this is not the confidence interval was essentially infinite