those gold/silver emergency blankets: do they really work, and how?
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They do work but they don’t work. Let me explain.
They do work to trap heat. In a cold situation, they’ll reflect your body heat and will raise the temperature slightly. However, it’s very thin metal, basically a metal plastic, and it will shift and crinkle with every breath you take. It’s going to be very loud and you’re not really going to be able to sleep until you’re exhausted. Also if you do happen to get “too” warm then you’ll start to sweat and then that sweat will make you colder if you let some cooler air in. It’s hard to get the temperature to a perfect state.
So yes it will keep you alive but no you’re not going to like it.
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