My method: swallow water while holding your breath and pinching your nose. Learned this at a young age, it definitely works. I think it creates the pressure that the article discusses.
I used to "cure" my hiccups as a kid, by getting as upside-down as possible, generally by hanging off a bed or couch, but always with head at a lower level than stomach. Then drink water. The Esophagus has to be working to push water uphill.
It has same effect: pressure on the diaphragm. It worked ... ish, or it was at least occasionally successful or gave some relief, better than nothing.
It has same effect: pressure on the diaphragm. It worked ... ish, or it was at least occasionally successful or gave some relief, better than nothing.