Whenever we eat something our mouth water.It is actually the secretion of saliva by the salivary  glands.Saliva contain some digestive enzyme which helps to break down starch into its simpler form,sugar.It also helps to make the food softer and make it easier for chewing as well as swallowing it.

Introduction
When we see or smell food that we like, our mouth begins to water in anticipation of eating it. This is a natural physiological response that occurs in our body.

The Science behind Mouthwatering
The process of mouthwatering is controlled by our autonomic nervous system, which is responsible for regulating our body's involuntary functions. The sight, smell, and taste of food trigger a signal in our brain which sends a message to our salivary glands to produce more saliva.

Saliva and Digestion
Saliva plays an important role in the digestion of food. It contains enzymes that help break down carbohydrates, fats, and proteins in our food. Saliva also helps to lubricate our food, making it easier to swallow.

Role of Taste Buds
Our taste buds also play a role in mouthwatering. They are responsible for detecting the different flavors of food such as sweet, sour, salty, and bitter. When we taste something that we like, our brain sends a signal to our salivary glands to produce more saliva.

Psychological Factors
Mouthwatering is not only a physiological response but also a psychological one. Our past experiences and memories associated with certain foods can trigger mouthwatering. For example, the smell of freshly baked cookies may remind us of our childhood and trigger a mouthwatering response.

Conclusion
In conclusion, mouthwatering is a natural physiological response that helps prepare our body for digestion. It is triggered by the sight, smell, and taste of food and is controlled by our autonomic nervous system. Saliva plays an important role in the digestion of food, and our taste buds and psychological factors also contribute to mouthwatering.