What resonance really is: from playground swings to singing bowls
Resonance explained simply: natural frequency, damping, standing waves, singing bowls and your voice, plus what wellness marketing means by the word.
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Liu Zi Jue: where the Six Healing Sounds come from
Where do the Six Healing Sounds come from? The earliest text, its uncertain date, changing organ pairings and the 2003 standard form of Liu Zi Jue.
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Slow breathing and heart rate variability: what actually happens in your body
At about six breaths a minute, your heart rate swings most with each breath. What studies show about slow breathing and HRV, and what they don’t.
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Our labels: how we mark the evidence
Every article in this library carries a label at the top. It tells you at a glance how strong the evidence is for the article’s main claim: what research shows, what comes from tradition, and what is still an open question. We’d rather be honest than impressive. The labels are there so you can see…
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Solfeggio frequencies: where they come from and what the evidence says
Where the Solfeggio frequencies really come from, from Guido d’Arezzo to a 1999 book, and what the few small studies on 528 Hz actually tested.
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432 Hz vs 440 Hz: history, myths and evidence
Why concert pitch is 440 Hz, what Verdi really said about 432 Hz, and what the few small studies on 432 Hz music actually found. An honest look.
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Humming and nitric oxide in the nose
In small lab studies, humming briefly raised nitric oxide in the nose about 15-fold. What this shows, what it does not, and how it relates to qigong.
