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

https://trevorastj134.lowescouponn.com/at-home-sleep-apnea-test-online-how-it-works-and-what-to-expect

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