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#37247 - 03/06/05 08:41 PM Re: Melting snow
frenchy Offline

Registered: 12/18/02
Posts: 1320
Loc: France
"Normal" consumption rates for water when active range anywhere from 1/2 liter to 2 liters per hour ...

Oh ... <img src="/images/graemlins/confused.gif" alt="" />
Is there a typo and do you mean 2 liters per day ?
Or is this under very special conditions (high activity, very high temp, in desert, with 0 hygro....) ???

I would have said 2 liters per day in a "normal" urban environnement.
But I have no medical qualification ...

#37248 - 03/06/05 08:58 PM Re: Melting snow
NeighborBill Offline

Registered: 03/02/03
Posts: 385
Loc: Oklahoma City
Sorry, my water estimate of 1/2L to 2L per hour is correct for _outside labor_(pitching big tents, digging holes, carrying a forty kilo rucksack) in an arctic to sub desert climate. 2L per day is a good estimate for working in an office/walking around shopping <img src="/images/graemlins/smile.gif" alt="" /> Most of uswould probably feel bloated only drinking one liter per day in a sedentary environment.
Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein

#37249 - 03/06/05 10:28 PM Re: Melting snow
frenchy Offline

Registered: 12/18/02
Posts: 1320
Loc: France
I do drink 2L/day. Guess what my environment is ?? <img src="/images/graemlins/grin.gif" alt="" />

Last summer, during a hot day, I drank 3 and a half liter, while walking 4 to 5 hours.
Adding what I drank after that, in the evening, I must have drunk 4.5 to 5 liters at least that day. That is a record for me !

#37250 - 03/07/05 04:15 PM Re: Melting snow
paramedicpete Offline

Registered: 04/09/02
Posts: 1920
Loc: Frederick, Maryland

#37251 - 03/12/05 04:11 PM Re: Melting snow
aardwolfe Offline
Old Hand

Registered: 08/22/01
Posts: 923
Loc: St. John's, Newfoundland
Well, according to www.snopes.com, the 2L per day minimum is an urban legend:


Dr. Barbara Rolls, one of the co-authors of "Thirst (Problems in the Behavioural Sciences)", and Holder of Guthrie Chair in Nutrition and Professor of Biobehavioral Health at U Penn, says she has no idea where the number came from, and most experts agree it's much too high. In fact, some experts maintain (though they advise against it) that most people take in enough water through solid food that they could survive without drinking any liquids at all.

Studies have also shown that drinking coffee, cola, etc. does NOT dehydrate you, so you don't need an extra hit of water to compensate for that double latte.

Snopes traces the "well-known facts" to a self-published book by an Iranian-born doctor living in the USA who did no independent research and sounds like a classic quack/crackpot to me.

Obviously, in hot dry surroundings, or where you're doing a lot of physical work (e.g. hiking with a heavy backpack on a hot summer day) you're going to go through more water than sitting in an air-conditioned office. But for most purposes, 1 litre a day is quite sufficient.
"The mind is not a vessel to be filled but a fire to be kindled."

#37252 - 03/22/05 02:36 PM Re: Melting snow
ChristinaRodriguez Offline

Registered: 02/24/03
Posts: 324
Loc: Rhode Island
Wow, to think I avoided reading this thread because I thought it was just about melting snow. I've been missing out.

Early on during a day hike I needed to "go," but wanted to wait until I found a decent place. I kept drinking water the entire time, and since the weather was very hot, I sweated alot too. I noticed that the urge to "go" didn't increase at all with all the extra water I was consuming, and I assumed it was because I was sweating it out. That's kind of interesting.

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