The diaphragm is a dome-shaped muscle located just below the lungs and heart that plays a crucial role in respiration, which is the process of breathing. It contracts and flattens when you inhale, creating a vacuum effect that pulls air into the lungs. When you exhale, the diaphragm relaxes and the air is pushed out of the lungs. The diaphragm is the primary muscle used in respiration and contracts rhythmically and continually, and most of the time, involuntarily.

In addition to its respiratory function, the diaphragm also has some non-respiratory functions. It increases abdominal pressure to help the body get rid of vomit, urine, and feces. It also places pressure on the esophagus to prevent acid reflux. The phrenic nerve controls the movement of the diaphragm, which runs from the neck to the diaphragm.

The diaphragm is one of the bodys most important muscles because of its crucial role in breathing. Protecting the diaphragm can be done by limiting foods that trigger heartburn or acid reflux, eating smaller portions of food at a time, stretching and warming up before exercise, and exercising within your limits. Like any muscle, you can also strengthen your diaphragm with special exercises, such as diaphragmatic breathing.