The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
when you deliberately inhale with a lot of vigor or you deliberately make your inhale longer than you naturally would so for instance if I breathe in very vigorously through my nose something very specific happens to your heart rate it increases
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
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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whereas when you deliberately exhale meaning when you exhale and deliberately make that exhale longer or you deliberately add Vigor to that exhale or even a shorter deliberate more vigorous exhale you slow down your heart rate
so what this means is if you want your heart to beat faster inhale longer inhale more vigorously than your exhales