Chewing is the process of breaking down food into smaller pieces using the teeth. This mechanical action helps to mix the food with saliva, which contains enzymes that begin the digestion process. Chewing is essential for proper digestion, as it increases the surface area of food, making it easier for the body to absorb nutrients. The act of chewing involves various muscles in the jaw, including the masseter and temporalis muscles. These muscles work together to move the jaw up and down, allowing the teeth to grind and crush food. Proper chewing can also enhance the enjoyment of food by releasing flavors and aromas.