Hiccups? How to stop them and why they come about so repeatedly?

I get hiccups... A LOT... i know that it's a spasm of the diaphragm, but what i don't know is why i win them so often... sometimes i enjoy them on and off adjectives day... is within any way to stop hiccups that acctualy works? drink hose down and plug your nose for as long as you can. promise it other works for me!
Hold your breath for about 5 minutes.