The tongue causing an obstruction. He very well may have sleep apnea and should talk with his doctor. Does he get tired during the day? Have heart issues? high blood pressure? get headaches? Any other symptoms?
i have sleep apnea. snoring happens when your tongue sits in the back of your throat, and the person tries to breathe through their mouth. mostly this happens when the person lies on their back. he should see a doctor and they can diagnose him.