I get that our body needs water. But why does the thirst response almost always overestimates the amount of water our body actually needs, thereby leaving excess water that comes out as urine? How come our body doesn’t tell us to drink just the right amount of water that it needs? Why does yellow pee mean dehydration when the fact that there was enough excess water to produce urine means that you’re probably not dehydrated anymore?
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The waste in urine will crystallize if it gets too concentrated. That can cause kidney stones.
By keeping enough water available, the concentration of the waste products are lower and the system functions better.
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