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<blockquote data-quote="Nightson" data-source="post: 4817310" data-attributes="member: 61515">My source is the SAS Survival HandbookYou lose about .5 to .75 of a gallon per day.&nbsp; One waterskin a day should do you, you're at a slight negative balance in terms of water, but not enough to impair you.&nbsp; Oh and as to drinking 4 gallons of water in a day, not only would it probably kill you, probably make you vomit, but it's also useless.&quot;Less fluid will not result in less sweating.&nbsp; Sweating is a cooling mechanism, not a way of losing moisture.&nbsp; If more fluid is drunk than needed it will be excreted and use to no purpose.&quot;Miscellaneous tips-Always drink water in small, regular sips, drinking too much at once will likely cause you to vomit losing lots of water-Eat as little as possible, avoid fat, it takes the most water to break down and digest-Don't talk and breathe through your nose-Clothing goes like this, loose clothing&gt;tight clothing&gt;no clothing.&nbsp; Loose clothing provides an insulating layer of air which makes sweating more efficient, no clothing will cause you to lose sweat to evaporation, requiring more water to keep yourself cool, along with the much heightened risk of sunburn-Ideally you should travel at night and rest in shelter during the day, you'd have an easier time</blockquote>

[QUOTE="Nightson, post: 4817310, member: 61515"] My source is the SAS Survival Handbook You lose about .5 to .75 of a gallon per day. One waterskin a day should do you, you're at a slight negative balance in terms of water, but not enough to impair you. Oh and as to drinking 4 gallons of water in a day, not only would it probably kill you, probably make you vomit, but it's also useless. "Less fluid will not result in less sweating. Sweating is a cooling mechanism, not a way of losing moisture. If more fluid is drunk than needed it will be excreted and use to no purpose." Miscellaneous tips -Always drink water in small, regular sips, drinking too much at once will likely cause you to vomit losing lots of water -Eat as little as possible, avoid fat, it takes the most water to break down and digest -Don't talk and breathe through your nose -Clothing goes like this, loose clothing>tight clothing>no clothing. Loose clothing provides an insulating layer of air which makes sweating more efficient, no clothing will cause you to lose sweat to evaporation, requiring more water to keep yourself cool, along with the much heightened risk of sunburn -Ideally you should travel at night and rest in shelter during the day, you'd have an easier time [/QUOTE]

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