The blockage can be worsened by physical deformities in the mouth, throat, and nasal passages. Enlargement of the tongue is another major cause of snoring and sleep apnea, as it can block your airway.
If you can make a snoring noise with your mouth open and closed, try this: stick your tongue out as far as it will go and grip it between your teeth. Now try to make a snoring noise. If it is ...