Another study showed how the didgeridoo can help reduce the severity of sleep apnea.
Another study conducted in Switzerland by Milo A. Puhan was published online by the British Medical Journal. Puhan worked with 25 patients with moderate obstructive sleep apnea, and fourteen of these participants were given four-foot long plastic didgeridoos, or a drone instrument, used among the aborigines native to Australia.
These fourteen participants had four lessons on how to play the instrument over an eight-week period. Participants were asked to practice 20 minutes a day, five days a week. The 11 people in the control group were placed on a four-month waiting list to receive a didgeridoo and the accompanying lessons.