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How do hiccups work?
Quick answer
Hiccups work as sudden, involuntary spasms of the diaphragm, the muscle under your lungs. Each spasm yanks in a quick breath that's abruptly cut off by the closing of your vocal cords — making the 'hic' sound. The diaphragm contracts suddenly and involuntarily.
Step by step
- The diaphragm contracts suddenly and involuntarily.
- This pulls in a sharp, unexpected breath.
- The vocal cords snap shut, stopping the air with a 'hic.'
- Triggers include eating fast, fizzy drinks, or excitement.
- Most bouts are harmless and fade on their own.
People also ask
What causes hiccups?
An irritated or overstimulated diaphragm spasms involuntarily; common triggers are eating too fast, fizzy drinks, swallowing air, or sudden excitement.
What makes the 'hic' sound?
After the diaphragm jerks in a quick breath, the vocal cords snap shut abruptly, cutting off the air with the characteristic sound.
Why do home remedies for hiccups sometimes work?
Tricks like holding your breath or sipping water can raise carbon dioxide or stimulate nerves, helping reset the diaphragm's rhythm.
Part of the guide: How Your Body Works →