I watched a show the other night about a Former Navy Seal who was able to stay submerged in ice cold water for over an hour before his core temperature dropped to 95* He was given a small obsticle course to do before he got into the cold water then immediately after. He was able come within 3 seconds of his best time even after the ice bath. His weapon accuracy and mental alertness was still sharp as ever. The scientists said that he was able slow down the affects of the frigid water because of his training and his mental toughness. I thought that was pretty impressive. It's amazing what people are capable of.
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