What is breathing?

Breathing is the physical process of taking in oxygen-rich air into the lungs and expelling carbon dioxide-rich air out of the body. It is a vital process that occurs continuously in living organisms.

In humans, breathing involves two main steps: inhalation, where oxygen enters the lungs, and exhalation, where carbon dioxide is removed from the body.

This process is carried out with the help of respiratory organs such as the lungs, diaphragm, and rib muscles.

Breathing is essential because it supplies oxygen needed for respiration and removes carbon dioxide, which is a waste product of cellular activities.