system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What actually is occurring when you bring a house fly back to life with salt?

I know that if a fly is dead and you pour salt on it, it should eventually come back to life. I've tested this before and it worked. What reaction occurs with the salt and house fly that brings it back to life?
gpt
They aren't dead. This trick happens with drowned flies. Simply, they don't breathe like we do, they breathe through a series of tubes called spiracles. When you "drown" the fly, the water blocks the spiracles and they stop being able to breathe. They then fall unconscious as a result. When you add salt, it draws the water out of the spiracles to the salt, they start being able to breathe again, and recover.