Positional therapy encourages side sleeping to reduce apneas that worsen when lying on the back

https://www.scribd.com/document/998100262/Sleep-Apnea-Test-Online-Common-Myths-and-Misconceptions-Debunked-147601

Positional therapy encourages side sleeping to reduce apneas that worsen when lying on the back, using specialized pillows, belts, or vibrating sensors.