Today we are going to go over one of the most vital things to know when spending time outdoors for an extended period. That’s right, knowing how to build various survival shelters can save your life when spending time outside, fighting against the harsh weather. Survival experts have long known about an idea called the Rule of Threes. It says that humans will die after 3 minutes with no air, 3 days without water, or 3 weeks of going without food. At least, those are the most commonly known rules. Many people forget that you can die in three hours without shelter when the environment is harsh enough.
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