Most people snore at some point. You are more likely to snore if you have a cold, are very tired, lay on your back or after ingesting alcohol or certain medications. Many people snore several times a week or every night. The snoring might indicate a very serious sleep disorder; sleep apnea. Snoring is partial closure of the throat causing the tissue to vibrate and cause the snoring. For many, the throat tissue closes off completely and causes the person to stop breathing. This is called sleep apnea and contributes to conditions such as daytime sleepiness, high blood pressure, diabetes and heart failure.