Snoring is a common condition that occurs when airflow through the mouth and nose is partially obstructed during sleep. This obstruction can cause the tissues in the throat to vibrate, producing the sound of snoring. Factors contributing to snoring include nasal congestion, obesity, and sleeping position. While snoring is often harmless, it can sometimes indicate a more serious condition called sleep apnea, where breathing repeatedly stops and starts during sleep. This can lead to disrupted sleep and other health issues. Lifestyle changes, such as losing weight or changing sleep positions, may help reduce snoring.