Some muscles get all the glory. Bodybuilders show off their swollen triceps; sprinters flash their sharp-edged calves. But deep inside all of us, a sheet of muscle does heroic work in obscurity. In ...

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

Your diaphragm is a thin muscle that separates your chest and abdomen. When you inhale, your diaphragm tightens and expands your chest cavity. A paralyzed diaphragm doesn’t tighten as it should when ...