Melbourne

Holding my breath generally works, but only if I do it like this:

• breathe in and out as normally as you can
• take a big breath in, big big. Fill your lungs alllllll the way up
• hold for as long as you can
• do not exhale suddenly!
• when you cannot hold any long, let the air out slowly, shape your mouth as if you're whistling to do so. Like an small o shape.
• nice and slow until you've exhaled completely.
• repeat if required, but make sure you take normal breaths as per step one so you don't hyperventilate

This helps me, as generally hiccups are caused by the diaphragm spasming. The full-lung breath-hold helps to like, reset it. And the very slow exhale is to stop the diaphragm from starting again from the shock of a sudden big exhale.