Not from my experience, but from my brothers: He had severe sleep apnea, stopped breathing 85 times a minute. His life is so much better now. He was always tired and could not sit in a chair for over 5 minutes before falling asleep, he couldn’t be in a car for 5 minutes without falling asleep, including when he was driving. Yes, he was a menace behind the wheel. He now sleeps the entire night, never falls asleep during the day and doesn’t need a nap. My recommendation is to use the machine as prescribed.