Are sleep clinics legit/helpful, or a scam?

[Nrdsb4]

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So when I say that my husband’s new CPAP machine is next to silent, that is saying a lot. His older machine was louder, although still very quiet, and I got used to it as white noise.

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<p>That’s good to know. Upon further reflection, I realized that I haven’t worked night shift in 14 years. I’m sure those machines have come a long way since then.</p>