The Muscles of Breathing

The diaphragm is the large curved muscle located below your lungs. It is the main muscle used in breathing. When the diaphragm drops down (contracts) and the rib cage expands, the air flows into the lungs. When the lungs are full of air, the diaphragm relaxes (goes back to its original position) and air is pushed out of your lungs.

There are other muscles in your neck and in between your ribs that also can help with breathing.

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