[mcv]

It is surprisingly common. My wife was recently diagnosed with sleep apnea, after a decade of sleep problems. Not sure why that took so long, because her dad also had it. He slept with an air mask, as does a good friend of mine. My wife doesn't have a mask, but uses special bracers that are supposed to keep her airways open. Less annoying than a mask, and it is an improvement, but I'm not sure it's enough of an improvement. We'll see.