Something to Build This Weekend: The Homemade Didgeridoo

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Good Morning.

Part 1 walked the airway front to back and matched a low-cost measure to each obstruction site. Part 2 handed your CPAP-declining patient something to wear tonight, and drew the honest line between a snoring-cleared drugstore mouthguard and a custom, OSA-cleared appliance. Today, we close the series with the cheapest tool in the whole pathway, and the only one your patient can build by hand (or buy online for well under $200): a didgeridoo.

It sounds like a gimmick. It isn't. There's a randomized controlled trial in the BMJ behind it. The mechanism is the same muscle-tone story from Part 1, just powered by an instrument the patient enjoys enough to actually pick up every night. And that last part, adherence, is the whole reason it's worth teaching.

This is Part 3 of a three-part series. Part 1 gave you the pathway. Part 2 gave you the device tier. Part 3 gives you the build-it-yourself airway trainer: what it is, the surprising evidence, and how to frame it so it remains an honest adjunct rather than an overpromise.

The 30-Second Version

• The finale of the low-cost pathway is a tool that the patient makes and plays with. Circular breathing on a didgeridoo trains the tongue, soft palate, and pharyngeal muscles that lose tone and collapse in OSA, the same targets as the myofunctional work in Part 1.

• The evidence is real, and yes, surprising: a randomized controlled trial (Puhan et al., 2006, BMJ) found that ~4 months of didgeridoo practice reduced AHI by ~6.2 points, decreased daytime sleepiness (Epworth −3.0), and improved partners' sleep.

• It isn't the instrument's mystique. Double-reed wind musicians (oboe, bassoon, high-blowing resistance) carry a lower OSA risk (Ward et al., 2012). The active ingredient is high-resistance, circular-breathing airway work.

• The honest ceiling: the 2020 meta-analysis (van der Weijden et al.) grades this evidence as low-certainty and modest, and it takes months of near-daily practice. Promise tone and better sleep quality, not a cure. Same rule as the whole series: adjunct to physician-directed care; re-test with HSAT at 8–12 weeks.

• A working instrument costs a few dollars to build from PVC, or a ready-made one runs ~$200 or less online. Take-home #3 is the one-page build sheet.

6-minute read.

First, the frame that keeps you safe

Same spine as Parts 1 and 2, one sentence longer: airway-muscle training supports tone and sleep quality; it is not a treatment for OSA. The apnea is still managed with the patient's physician, and when a device is the plan, a custom, titratable appliance. The didgeridoo is the muscle-training end of the pathway: the cheapest possible, patient-built, and genuinely evidence-backed, but still an adjunct. And prove it objectively: re-test with an HSAT at 8–12 weeks before calling anything controlled. Feeling more rested is not the same as being treated.

Why a didgeridoo, of all things

OSA is partly a neuromuscular problem. In sleep, the dilator muscles that hold the airway open, the tongue base, soft palate, and pharyngeal walls, lose tone, and the airway narrows or collapses. Anything that reliably builds tone in those muscles is working the right target.

Circular breathing is resistance training for exactly those muscles. To keep a continuous drone going, the player pushes air out through the lips and cheeks while sipping in a breath through the nose, never breaking the sound. That means sustained expiratory pressure against resistance and continuous activation of the upper-airway dilators, over and over, for twenty-plus minutes at a stretch. It's the myofunctional therapy from Part 1 (Camacho et al., 2015), disguised as a hobby the patient will actually keep doing.

The evidence, honestly

The anchor is a real study. Puhan and colleagues (BMJ, 2006) randomly assigned patients with moderate sleep apnea (AHI 15–30) and daytime sleepiness to either receive didgeridoo lessons and practice at home for 4 months or be on a waitlist. Those who practiced played for about 25 minutes a day, around six days a week. Compared to the waitlist group, they experienced a 6.2-point decrease in AHI, a 3-point improvement in daytime sleepiness, and noticeable reductions in sleep disturbances reported by their partners. This study was randomized, controlled, and published in a major journal, so it's credible.

Another study by Ward and colleagues (2012) found that musicians who play double-reed wind instruments, like the oboe and bassoon, had a lower risk of sleep apnea than other musicians. This observational study supports the idea that playing these instruments strengthens the airway muscles. However, a 2020 review and analysis (van der Weijden et al.) of studies on wind instruments and singing found that the effect is small, positive, and uncertain, based on limited studies and requiring long-term practice to be noticeable. So, it's important to have realistic expectations: it's beneficial, can improve partner sleep and daytime alertness, but it's not a cure, and it's shown to help with moderate sleep apnea. For severe sleep apnea, it's important to consult a doctor rather than relying on this method.

What the patient actually plays

The instrument is almost beside the point, which is why this fits a patient saving for a custom appliance. Building one is genuinely cheap: a 4–5-foot length of PVC pipe (about 1–1.5-inch inner diameter), or even a sturdy, long cardboard tube, with a small ring of beeswax for a mouthpiece, runs a few dollars. But building isn't for everyone, and it doesn't have to be: a ready-made travel or practice didgeridoo online runs roughly $200 or less (often far less), and works exactly the same. Homemade or store-bought, tone quality is irrelevant here — the circular-breathing practice is the therapy, not the music.

The real skill is the circular breathing itself, and it's learnable in stages, puffed-cheek air first, then a straw in a glass of water to feel the continuous outflow, then the drone. Take-home #3 handles the other half, the instrument: a one-page build sheet for a uniform 1.5-inch travel didgeridoo your patient can make at home.

Clinical Corner: The Build-and-Practice On-Ramp

Your take-home this week: the whole tool on one page.

📎 Take-home #3 — the Homemade Travel Didgeridoo Build Sheet. One page: the exact materials and cut list to build a uniform 1.5-inch travel didgeridoo your patient can make at home for a few dollars — the instrument for the circular-breathing practice above.

One Question

A different ask this week, and not about didgeridoos. This newsletter works best as a two-way street: I share what's moving the needle in our practice, and I learn from yours. So — what's one pearl that's made a real difference in your dental sleep practice? A habit, a script, a workflow, a way of framing the consult; the kind of small thing that's quietly produced consistent, successful patient outcomes. Hit reply and share it. I read every one, and with your permission, I may pass the best along (credited to you) in a future issue, so the whole list gets a little better.

A note on this issue's sponsor

Here's the clinical bridge to this issue's sponsor: circular breathing runs on the nose. The entire technique depends on sipping air in through the nostrils while the drone continues, so a blocked nose doesn't just make it uncomfortable; it makes it impossible. Which is where Xlear fits: a xylitol-based saline nasal care line, natural and drug-free, that keeps the nasal passage clean and patent so the training can actually happen. Made in American Fork, Utah, since 2000, it's the same "clear and hydrate" step from Part 1, now the thing that makes Part 3 possible.

Keep the framing where the evidence is: cleanliness and patency.

Disclosure: Xlear is a paid sponsor of More Than Teeth. We feature only sponsors whose products meet our clinical protocols, and sponsorship does not influence our clinical recommendations.

Coach Cathy's Take

The tool a patient actually uses is the one that doesn't feel like homework. That's the quiet advantage here: it's a little bit fun. Nobody looks forward to their tongue exercises, but people will pick up a didgeridoo and try to make it buzz, especially if the family gets in on it.

Two things make or break it. First, set the household up front; this is not a silent activity, so pick a time and a room and make it part of the evening rather than a surprise. Second, name the early frustration out loud: circular breathing feels impossible for about a week, and that's the exact point where most people quit. Tell them that in advance, and the flailing week becomes something they expected, rather than proof that they "can't do it." Small daily reps, two weeks before anyone judges it, and let the bed partner be the one who notices it's working.

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That's a wrap on the series

Three weeks, one patient: diagnosed with OSA, declining CPAP, saving toward a custom appliance, and stuck in the gap in between. We gave that patient a pathway (Part 1), something to wear tonight (Part 2), and now something to build (Part 3). Different tools, one rule holding them all together: honest, low-cost adjuncts to physician-directed care, with an HSAT at 8–12 weeks to keep everyone honest. Offer them that way, and you've made the patient a little better without ever stepping off the defensible path.

Thanks for reading all three. Reply anytime; I read them all.

References

1. Puhan MA, Suarez A, Lo Cascio C, Zahn A, Heitz M, Braendli O. Didgeridoo playing as alternative treatment for obstructive sleep apnoea syndrome: randomised controlled trial. BMJ. 2006;332(7536):266–270. doi: 10.1136/bmj.38705.470590.55. PMID: 16377643.

2. Ward CP, York KM, McCoy JG. Risk of obstructive sleep apnea lower in double reed wind musicians. J Clin Sleep Med. 2012;8(3):251–255. doi: 10.5664/jcsm.1906. PMID: 22701381.

3. van der Weijden FN, Lobbezoo F, Slot DE. The effect of playing a wind instrument or singing on risk of sleep apnea: a systematic review and meta-analysis. J Clin Sleep Med. 2020;16(9):1591–1601. doi: 10.5664/jcsm.8628.

4. Camacho M, Certal V, Abdullatif J, et al. Myofunctional therapy to treat obstructive sleep apnea: a systematic review and meta-analysis. Sleep. 2015;38(5):669–675. doi: 10.5665/sleep.4652. PMID: 25348130.

Until next time,

Dr. Michael & Cathy Bennett
More Than Teeth | A Mission for Generational Health