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My wife drinks when she is thirsty as do I. My wife drinks a lot of coffee, however. A few times she has gone to the emergency room for unrelated issues (she has shunts) and she has been kept because she is dehydrated. I believe this is her normal state because coffee is a Diuretic (makes her urinate a lot) so she is losing water there and not taking enough ...


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In practice, when you exercise a lot and lose water in the form of sweat, you will need to manage the amount of water you drink, you can't leave that to just feeling thirsty and drinking as a response to that. The rule of thumb is to drink 50% more than the lost water (which you can measure by weighing yourself before and after the exercise session). Also, ...


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Personally I feel like the thirst response is the primary go-to for what hydration your body needs, but it's not exactly fool proof. There was a 1991 study showing that, as men (and probably) women age, they have reduced thirst and are at increased risk of dehydration. The participants in the study you linked were young-ish: Twenty healthy participants ...


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Assuming you have sufficient sodium, your body will do a good job regulating your water level; if you drink too much, you will excrete it.


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Yes you can retain water, but since you are exercising 5+ days a week you need that water to help you hydrate and will not retain much of it at all. When you exercise, you force the veins to carry back waste products and used-up blood to the heart, which, in turn, cleans that blood, with the aid of other organs. This aids in the secretion (much of ...



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