Is this what you're looking for?
http://www.smile-on.com/articles/articl ... cle_id=521
I was curious about the same thing.
I've read that playing the didgeridoo will prevent snoring (and apparently some apnea). So, I wondered if there might be some throat and tongue exercises that might help treat OSA.
I only found this one site that lists some exercises. I tried to do some further searching to see if the author had published anything in the open scientific literature, and found nothing.
I've been doing them (once daily) for over a month. I have no idea whether they help, but they at least appear harmless.
Also, I showed them to my pulmonologist, and he had never seen any thing like them.
Regards all - - Woof