Deep Breathing

The diaphragm is a dome-shaped muscle that separates the chest cavity from the abdominal cavity. Deep breathing involves the contraction of the diaphragm, which allows the lungs to expand and fill with air. This process is facilitated by the relaxation of the intercostal muscles, which are the muscles between the ribs. The belly also expands during deep breathing, making room for the contraction of the diaphragm. According to some sources, deep breathing may have various benefits, although the exact effects are reportedly still being researched.