How on Earth Can a Didgeridoo Help Sleep Apnea?

The premise was to see the physiological benefit of playing the didgeridoo, which stemmed from an action called circular breathing. The player inhales through the nose and holds an uninterrupted outflow into the instrument through the mouth. You basically are using your cheeks as bellows, which produces a continuous note that is sustained for more extended periods than what would be possible if you used just a single breath.