https://matteocampagna.com/en/registry/health/slow-breathing-unwanted-effects Changes to this claim in Matteo Campagna's evidence registry: its status, its year-by-year history, revisions of the page. en-gb https://matteocampagna.com/en/registry/health/slow-breathing-unwanted-effectsThere is nothing on archers, and the only source is a 2017 narrative review of the effects of slow breathing in healthy adults, which summarises other studies without reporting their data. The authors write that no documented adverse effect of breathing at between six and ten breaths a minute has yet appeared in the literature, and they cite several studies in which mean blood pressure falls during controlled slow breathing, without giving the values. They name the limit themselves: the data come almost entirely from short laboratory sessions and prolonged practice has been little studied. A review that finds no adverse effects described is not a study that went looking for them, so the registry treats the question as unstudied. Finding no adverse effects in sessions lasting a few minutes does not show that there are none over weeks of daily use, or in someone doing it standing up with a bow in hand.claim:respirazione-lenta-sicurezza:revision:2026-03-17:2Tue, 17 Mar 2026 08:00:00 GMT https://matteocampagna.com/en/registry/health/slow-breathing-unwanted-effectsclaim:respirazione-lenta-sicurezza:new_claim:2026-02-21:non_studiatoSat, 21 Feb 2026 08:00:00 GMT