Pretty much every other bodily action I can think of is under your control and you can forcefully stop it on command, like yawning. What prevents you from re-opening your throat until after you’ve completed the act of swallowing in its entirety?
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When you swallow, your body closes the windpipe to prevent you from choking.
If you stopped the swallow, jothing would stop you from aspirating whatever was being swallowed.
You do not want this power, and natural selection had a good reason, so to speak, to make sure you don’t have it.
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