When was the last time you took a deep breath, expanding your chest, contracting your diaphragm, letting fresh air seep into the deepest part of your lungs? If you haven't, you should try it now. How ...

Hiccups occur as a result of the diaphragm suddenly involuntarily contracting. The diaphragm is the layer of muscle that separates the chest and abdominal cavities and plays an important role in ...

•The diaphragm marks the boundary between your chest and abdomen, and it also regulates breathing.