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13
votes
1answer
553 views

Does drinking tea cause problems at altitude?

I've heard from a tour leader that you shouldn't drink tea in high altitude because it makes you thirsty and cause problem in blood circulation. Is this true? Should'nt we drink tea in high altitude?
42
votes
5answers
21k views

Is drinking urine safe?

We've all heard stories about how people saved their lives by drinking their urine. Is drinking urine safe when there are no other water sources available? Can I filter it with a water purifier?
9
votes
4answers
658 views

How to stay hydrated with minimum water usage

A friend of mine asked a experienced long distance hiker, how to drink during such a hike. The answer was, drink 0.1l water per hour and then you are fine. Is this correct and can anyone add some ...