<human>:  How does digestion work?
<bot>: Digestion is the process by which food is broken down into smaller, more easily absorbed components. During the digestion process, food is mixed with saliva and broken down by chemical actions and physical actions such as chewing and grinding. The digestive enzymes in saliva then break down carbohydrates, proteins and fats into their individual components, and these nutrients are then absorbed into the bloodstream and used for energy and other bodily processes.