besides eating real fast, what causes hiccups?!
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Hiccups are caused when a muscle, called the diaphram, is out of sync with your lungs/breathing pattern. The diaphram is the muscle underneath the lungs that "separates" them, so to speak, from your pancreas, spleen, liver, etc.
The diaphram moves out/down when you breathe in, making room for your lungs to expand or get full of air. When you breathe out the diaphram moves in/up because your body doesn't need that room anymore. This is also why if you watch your stomach while you breathe you'll see that it moves in and out, even though air goes into your lungs, not your stomach.
When you breathe too fast or unevenly (like taking a deep breath in and only letting a little out, this happens when you run) the diaphram can't "keep up" with how fast your lungs are filling and emptying. So the diaphram is trying to make room for air when you're breathing out, and take away the room when your lungs need it. The diaphram is now out of sync with your lungs.
The phrenic nerve then signals your body to "hiccup" so that the diaphram can try to get back to the right cycle or pattern, so that it is making room for air when you are breathing in air.
You will continue to hiccup until the diaphram and lungs are moving together again.
This is why all those hiccup remedies don't work, like drinking from the opposite side of a glass, or standing on your head. The only way you can get rid of the hiccups is the breathe slowly and evenly. People will say that standing on your head, etc. "cures" hiccups because while you're doing (whatever it is they say will cure your hiccups) you are more than likely concentrating and therefore breathing slowly and evenly.
So, anything that causes your breathing pattern to change suddenly can cause hiccups. Laughing really hard, being really nervous or anxious, being startled or scared, some people even experience them after/during exercise. You could probably even induce(cause/start) your own hiccups by breathing extremely abnormally(very heavy breathing), or at an unusual interval(not breathing in at the same rate you breathe out).
Swallowing air causes you to burp.
Other Answers:
My hiccup machine whanna try it?
Swallowing air causes hiccups. That's why people get them when they eat fast.
Phrenic nerve makes you hiccough
Source(s):
http://www.herballegacy.com/id103.htm
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