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That's not your stomach that twitches, it's your diaphragm. The diaphragm the muscle that is responsible for allowing air into and out of the lungs. When one sneezes, one generally passes the contents of his lungs from the body in a single instant. This requires a forceful, violent contraction of the diaphragm muscle. The twitching that you feel afterwards is just the muscle still reacting to nerve impulse.

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19y ago

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