You have the hiccups? hold your breath and swallow 3 times consecutively (while holding your breath) to me it really helps.
How to treat the hiccups?
I have already read several opinions about the hiccups. Mine, got a doctor in Mechelen, really helps. I came over to him with our son who had the hiccups for two days. He is going to be his private department and comes back with sugar, vinegar, a tablespoon and a teaspoon. The spoon he does a teaspoon of sugar, otherwise he fills the spoon with vinegar. My son has to take it. Before he swallows the hiccups away.
Against hiccup always works !! Promise the person with hiccups 5 euro or anything else they'd like to have the condition that they dreaded again. In some way, it scares the hiccups immediately stops. It does not work if you do not to be credible, so after years of use it will be difficult for the same people.
If you have not "some hiccups" but really stubborn, the most well-intentioned tips do not help (I know from personal experience). What does help me blowing into a plastic (or paper) bag. bear in the mouth and nose and breathe in and out of. Granted, you get the stuffy but the hiccups are gone! Good luck.