A hiccup is an involuntary spasm of your diaphragm. That's why I actually have always found success in holding my breath to stop them. If that doesn't stop them, slow, deep, rhythmic breathing might help also.
Caused by a spasm of the diaphragm, the large powerful muscle situated at the base of the chest cavity, a hiccup (or hiccough) is an abrupt, involuntary intake of air. The diaphragm contracts and relaxes as an aid to breathing; the contractions are... read more