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After I got married, and my wife observed my sleep apnea, I did a sleep study. My apnea was infrequent/mild enough that the doctor considered CPAP unnecessarily invasive/expensive.

She told me to take a sock, put a tennis ball in it, safety pin it to the back of a t-shirt, and sleep in that.

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Does that just stop you from moving onto your back while you sleep or is there some other goal?

I'm picking that it cushions the blow when his wife kicks him. On a related note, I had a friend who resorted to using duct tape over his partners mouth. Other than being rather brutal and terrifying to see in half light it worked wonders I'm told - better than the prescription tongue depressor thing.

Just stops me from moving onto my back while I sleep.

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