You must have definitely come across people who snore during sleep. Their mouth remains open and a peculiar sound comes out while breathing. Do you know why this happens? Normally, people breathe through nose. But some people‘s nose remains blocked due to some reason. And thus they breathe through mouth. Sleeping on the back can also make a person snore. When we are asleep and breathe through the mouth, the air coming out causes our soft palate (tissue at the back and top of our mouth) to flutter back and forth. Thus, a strange sound of snoring is produced. Often this vibration also causes cheeks, lips and nostrils to vibrate which produces an even louder sound. When we are awake, the palate remains tight and, therefore, no such sound is produced. If we clean our nose and mouth before sleeping, snoring can be controlled to some extent. This increases the possibility of breathing through nose rather than through mouth. If one develops the habit of breathing through nose, the possibility of snoring is greatly reduced. Breathing through mouth is harmful for health. The germs of many diseases can enter directly into the mouth and cause diseases. If we breathe through nose, the hairs present in the nose do not allow these germs to enter into the body. It is, therefore, advisable to develop the habit of breathing through the nose.