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The usual advice to someone in an emergency situation in the wilderness is to stay put, so that it's easier for rescuers to find you. In this situation, performance isn't an issue. There is a folk belief that "thirst is too late," and that people are commonly dehydrated without knowing it. If you believed that, then you might drink some of your water even ...


7

I have a very simple reasoning about it. It's only based on personal experience, so don't regard it as absolute truth. Your body needs a certain amount of water to be comfortable, say, N. Comfort here includes urination (removal of poisons from body) and sweating (removal of heat). If you drink N or more, the body will function well. If you drink less than ...


5

The literature is mostly pro-drinking and anti-rationing. Hopefully these sources will provide some details for you. The U.S. Army survival manual does not recommend that you drink water only when thirsty, as this leads to under hydrating. Instead, water should be drunk at regular intervals. Even in cold weather: Don't take chances with hydration. Do ...


1

When I took a wildlands firefighting course in Arizona, the instructor said that if you find yourself lost in the desert, you should not ration your water. People have died of thirst with water in their canteens.



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