Andrew Huberman· PhD
Long exhales via the mouth slow your HR. Like you’re blowing out slowly through a straw.
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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.
Long exhales via the mouth slow your HR. Like you’re blowing out slowly through a straw.
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Big, long exhale is going to allow you to slow your heart rate down.
This is also why, for instance, if you want to bring your heart rate down very quickly between rounds of martial arts, there are a number of different ways to do that. But an extended exhale of any kind or, frankly, any breathing practice that emphasizes exhales is going to bring your heart rate down.