Every night, millions of people stop breathing without knowing it. Not once, but sometimes hundreds of times. Their remedy? A mask, a hum and the steady whisper of pressurized air. It's not glamorous, ...

Cold air from the CPAP machine can mean the humidifier isn't working right. Snoring with a CPAP on might mean the pressure needs to be adjusted. Feeling worse or tired with a CPAP might mean its ...