I have used a CPAP for about 10 years. Off and on. I went for awhile without using it and I was so tired during the day. I finally got a new machine (quieter) and nasal pillow. Works much better. I can really tell a difference if I don't use it. I also wake up with a sore throat and headache if I don't. If you even THINK you might need one, please go for a sleep study. Most people who snore have sleep apnea. If I could just get DH to go for a study!