Breathing in is the process which is also known as inhalation. Inhalation is a process where taking air and sometimes some other substances, and other gases enter the lungs.
When we inhale or breathe in our diaphragm moves downward and contract. This helps to increase the space in our chest cavity and lungs expand into it. The muscles which are present between our ribs also help to enlarge the cavity of the chest. When we breathe they contract to pull our rib cage both outward and upward directions.
A woman needs 2000 calories a day while a man needs 2500 calories a day. Study your current weight and see whether it meets the requirements for your gender to better calculate your needs.
