The biggest reason it's bad to lose too much water is that the actual volume of your blood goes down. When blood volume goes down, blood pressure goes down. As blood pressure goes down, body heat goes up, because your blood helps regulate your core body temperature. Without enough blood, you can't cool off. Pretty soon you overheat.
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Without enough blood, you can't cool off.
如果血容量不足，人体便无法冷下来。
Move around inside enough to get the blood flowing without breaking a sweat.
在室内充分活动，在不流汗的情况下让血液流动起来。
Without enough of these, the animal becomes anemic, and–if the bone marrow isn’t given enough time to regenerate new red blood cells–it may even die.
红细胞的缺失诱发动物贫血；如果骨髓没有及时更新红细胞，动物就会丧命。
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