text: A 2005 study in the British Medical Journal found that learning and practicing the didgeridoo helped reduce snoring and sleep apnea by strengthening muscles in the upper airway , thus reducing their tendency to collapse during sleep .
simplified: A 2005 study in the British Medical Journal found that learning and playing the didgeridoo helped reduce snoring and sleep apnea . It does this by making muscles in the upper airway stronger , and this helps them stay open during sleep .