Popular travel vloggers, known for their adventures around the world, visit Iceland in the winter and decide to take a polar plunge in a freezing cold glacial lagoon. Despite the shock of the icy water, they both manage to stay in for a short period of time and emerge unharmed. How do they manage to avoid developing hyperthermia?
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They often do, but it is still in the mild stages. You need to be submerged for close to 30 minutes for it to get concerning.
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