system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does hot water hurt the body? What about intense heat hurts the body so much?
gpt
Hot water heats your body. Our cells only work in a fairly narrow range of temperatures. When it gets too hot, lots of proteins start breaking down, and proteins are necessary to live, so any cells that get that hot start dying. Our body doesn't like its cells dying like that, so it sends pain messages to the brain to get your hand away from the hot water.