Oropharyngeal exercises (myofunctional therapy)
A 2009 Brazilian RCT (Guimarães et al.) showed three months of daily oropharyngeal exercises reduced apnea-hypopnea index by ~39% in moderate OSA. Strongest evidence to date.
Didgeridoo playing
A 2006 BMJ trial showed four months of regular didgeridoo practice significantly reduced daytime sleepiness and apnea severity. Real, replicated, but requires consistent practice.
Buteyko method
Smaller studies show improvements in snoring and mild apnea, especially when combined with nasal breathing retraining. Evidence for moderate-to-severe OSA is weak.
What does not work alone
No breathing technique replaces CPAP for moderate or severe sleep apnea. If you have been prescribed CPAP, keep using it. Use breathing work as an adjunct, not a substitute.
Practical takeaway
For snoring and mild OSA, eight weeks of daily oropharyngeal exercises is the highest-leverage starting point.
Log your sessions in Breathe On and explore the matching guidance at [/breathing-for/sleep-apnea](/breathing-for/sleep-apnea).