Stock Photo - Josef Alexander Wirth, head of the snoring museum, blows into a Didgeridoo instrument at the museum in Alfeld, Germany, 04 December 2017. Playing the Didgeridoo has positive effects on the consecutive symptoms of the Obstructive Sleep Apnea Syndrome. In his exhibition, Wirth is presenting about 300 objects related to the subject of ""snoring"" - including therapeutic possibilities. Photo: Holger Hollemann/dpa. - Alfeld/Lower Saxony/Germany

Stock Photo: Josef Alexander Wirth, head of the snoring museum, blows into a Didgeridoo instrument at the museum in Alfeld, Germany, 04 December 2017.

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