Breathing - Wikipedia Although breathing is primarily automatic, it can be voluntarily modified for speaking, singing, swimming, or breath-holding training; conscious breathing techniques may promote relaxation
Human respiratory system - Mechanics, Lungs, Airways | Britannica The energy expended on breathing is used primarily in stretching the lung–chest system and thus causing airflow It normally amounts to 1 percent of the basal energy requirements of the body but rises substantially during exercise or illness
Respiratory System: Organs, Facts, Anatomy Function While you’re breathing in and out, your respiratory system also protects your body from dry air and potentially harmful particles When you inhale, your sinuses help regulate the temperature and humidity of the air
Respiratory System: Functions and Organs - WebMD The respiratory system is the organs and other parts of your body involved in breathing, where you exchange oxygen and carbon dioxide All the cells in your body need oxygen to work
How the Lungs Work - What Breathing Does for the Body | NHLBI, NIH When you breathe in, or inhale, your diaphragm contracts and moves downward This increases the space in your chest cavity, and your lungs expand into it The muscles between your ribs also help enlarge the chest cavity They contract to pull your rib cage both upward and outward when you inhale