Timeline for Will drinking lots of water in the day(s) prior to a long trek mean I will need less water on the trek?
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| Apr 17, 2018 at 8:11 | history | edited | user2766 | CC BY-SA 3.0 |
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| Apr 13, 2017 at 12:48 | history | edited | CommunityBot |
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| Apr 15, 2016 at 8:58 | history | edited | user2766 | CC BY-SA 3.0 |
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| Jan 18, 2016 at 10:07 | comment | added | user2766 | @whatsisname I would argue that climbing mountains is an athletic pursuit? Though I agree a direct comparison isn't ideal I don't believe that any studies have been made on the rates of hyponatremia in mountaineers. So this was the nearest I could get | |
| Jan 18, 2016 at 10:03 | comment | added | user2766 | @BenCrowell I'm guessing you object to the term dehydrated? What would you suggest as an alternative? | |
| Jan 17, 2016 at 19:35 | comment | added | user2169 | Sorry, but -1 because of this: The key to optimal hydration is little and often, because too much and your body will expel it, but too little and you become dehydrated. There's no way to avoid this mechanism. This is just propagating urban folklore. Before you get dehydrated, you will experience overpowering thirst. | |
| Jan 17, 2016 at 19:33 | comment | added | user2169 | @Liam: your recommended intake is 2.7 This is false. See Heinz Valtin, "'Drink at least eight glasses of water a day.' Really? Is there scientific evidence for '8x8'?," Am J Physiol Regul Integr Comp Physiol 283: R993-R1004, 2002. ajpregu.physiology.org/cgi/content/full/283/5/R993 | |
| Jan 17, 2016 at 17:08 | comment | added | cbeleites | As the OP mentions generally drinking too few water, drinking more water will most probably not put any strain on the kidneys but rather give them a happy and relaxed time for once. The kidneys need to expel water even if the body is below the optimal hydration level in order to maintain proper blood pH, electrolyte concentrations, and get rid of water soluble waste. And for someone generally not drinking enough, before overhydration comes proper hydration. I think the proposed approach of drinking more for a day or two will be slow enough drinking to avoid all kinds of overhydration problems. | |
| S Jan 17, 2016 at 15:32 | history | suggested | CommunityBot | CC BY-SA 3.0 |
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| Jan 17, 2016 at 6:49 | comment | added | whatsisname | While I agree with the gist of your answer, citing what happens to Boston Marathon participants, in a competition no less, is in no way a useful representation of the hydration behavior of 'normal' people, or to be used as a guide for anyone other than similar athletic competitors. | |
| Jan 15, 2016 at 11:16 | comment | added | user2766 | I mean that energy can be stored (fat/carbs). Water (mostly) can't (though energy storage also stores water it's only about 13% of your requirements). The OP seems to be making parallels to things, like carb loading, but with water. | |
| Jan 15, 2016 at 11:11 | comment | added | Sebastiaan van den Broek | About your comment that you can store energy as carbohydrates, what do you mean exactly by that? Because actually carbohydrates are also converted to fat for long-term storage and this process cannot be reversed. | |
| Jan 15, 2016 at 10:55 | comment | added | user2766 | That doesn't seem relevant in the context of the question? The OP wasn't asking about this. He just wanted to know if he could drink more water before a hike. This seems a different question/topic. | |
| Jan 15, 2016 at 10:50 | comment | added | ChrisW | You mentioned Hyponatremia (a low salt-to-water balance), as an argument for avoiding drinking water. But a different problem is Hypovolemia (insufficient blood volume), one of whose causes can be insufficient intake of salt-and-water. | |
| Jan 15, 2016 at 9:07 | comment | added | user2766 | Adding salt to water is a very good idea @ChrisW. this is basically what isotonic means (with the addition of some sugar also. The salt aids absorption of the water and replenishes salt lost though sweating, etc. If your in a hot climate you should always add salt (and sugar) to your water. You can by isotonic sachets to add. | |
| Jan 15, 2016 at 5:53 | vote | accept | WedaPashi♦ | ||
| Jan 15, 2016 at 0:04 | comment | added | ChrisW | What about if you have some extra salt with that extra water: does the extra salt allow you retain the extra water? | |
| Jan 14, 2016 at 23:23 | comment | added | Perkins | You can actually reabsorb water through your kidneys (primates are one of the few groups of mammals that can't reabsorb it through the bladder) but it's a good way to give yourself kidney stones and other problems, and it really won't reduce the amount of weight you're having to carry, merely your ability to perceive it, and at the cost of some discomfort. So don't try to go that route unless you're in a survival situation and have no other container. | |
| Jan 14, 2016 at 17:25 | history | edited | user2766 | CC BY-SA 3.0 |
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| Jan 14, 2016 at 17:21 | comment | added | user2766 | So that's about 0.375 Litres of water, your recommended intake is 2.7, so....... 13%?! Not that insignificant I suppose but still not a huge amount. Point taken though. | |
| Jan 14, 2016 at 17:13 | comment | added | njzk2 |
you also produce water when you convert glucose to energy but this is a small amount in the scheme of things not so small. A quick calculation based on the glucose breaking equation gives ~375g per day
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| Jan 14, 2016 at 15:12 | history | edited | user2766 | CC BY-SA 3.0 |
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| S Jan 14, 2016 at 14:04 | history | edited | user2766 | CC BY-SA 3.0 |
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| S Jan 14, 2016 at 14:04 | history | suggested | CommunityBot | CC BY-SA 3.0 |
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| Jan 14, 2016 at 13:09 | history | edited | user2766 | CC BY-SA 3.0 |
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| Jan 14, 2016 at 11:06 | history | edited | user2766 | CC BY-SA 3.0 |
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| Jan 14, 2016 at 11:00 | history | edited | user2766 | CC BY-SA 3.0 |
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| Jan 14, 2016 at 9:37 | history | answered | user2766 | CC BY-SA 3.0 |