Why do we snore?
Your windpipe is lined with muscles that keep the airway open. In some people, when these muscles relax during sleep, it partically blocks the airflow and interrupts the smooth passage of air into the lungs. As the air bounces around, it hits the relaxed, floppy tissues lining the throat and causes them to vibrate, like a flag in the wind. This is the snoring sound.
If the airway becomes completely blocked we stop breathing. This can happen up to 600 times a night. Amazingly the person suffering from sleep apnea is often unaware of it. Each time there is a blockage the brain signals the body to resume breathing. The quality of such fragmented sleep is extremely poor. The consequences can range from tiredness by day through headaches to high blood-pressure and even life-threatening conditions such as heart attacks and stroke.