Medically reviewed by Sanja Jelic, MD Key Takeaways The diaphragm is the main muscle used for breathing. The diaphragm helps ...

The diaphragm is the primary muscle used in respiration, which is the process of breathing. This dome-shaped muscle is located just below the lungs and heart. It contracts continually as you breathe ...

Diaphragm spasms feel like twitches in the area between the chest and the abdomen. They can occur with or without pain. Possible causes include an injury, nerve irritation, or a rare condition known ...