Positional obstructive sleep apnea is worse when supine; simple strategies like sewing a tennis ball to pajamas can

https://www.scribd.com/document/998608031/Is-a-Sleep-Apnea-Oral-Appliance-Right-for-You-Pros-and-Cons-Explained-179118

Positional obstructive sleep apnea is worse when supine; simple strategies like sewing a tennis ball to pajamas can discourage back sleeping.