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Is it true that I’m supposed to drink 8 glasses of water a day? 真的要每天喝8杯水吗？ No. “Eight a day” is a myth. What you really need is enough fluid to replace what you lose each day in your sweat, urine, breath, and other bodily excretions. That’s about 8 to 10 cups of water. Since we get about 4 cups’ worth from fruits, vegetables, and other foods, that leaves 4 to 6 cups for you to make up with beverages. Tea, coffee, juice, even soda count (though it’s also smart to avoid empty calories) toward your total. Of course, you may need more in hot weather or if you’re exercising or being more physically active than usual. So if you’re still thirsty, sip more. 不是。“每天8杯水”只是一个误区。你真正需要的是补充每天排汗，尿液，呼吸和其他身体排泄中失去的水分。那大约是8到10杯水。由于我们从水果、蔬菜和其他食物中获得约4杯水的分量，其余的4至6杯水你可以通过喝饮料来补充。茶，咖啡，水果汁，甚至碳酸水都算进你的总量。当然，天气热或当你运动或身体比平时更活跃时你需要补充更多水分。所以，如果你还是很渴，就多喝一点水。 Is it true that drinking too much water is dangerous? 喝太多水真的有危害吗？ Fact. “Water intoxication” is common among marathon runners, but it can also happen to anyone who’s exerting themselves for an extended period and guzzling lots of H2O. Physical stress like exercise reduces the kidneys’ ability to send urine to the bladder for excretion. Drink too much, and fluid levels could build in your body and brain, making brain cells swell and leading to headaches, nausea, vomiting, disorientation, and in some cases, death. To avoid it, drink enough to quench your thirst, not gallons. And if you need to drink large amounts of fluid, use Gatorade, Propel, Powerade, or other similar drinks that have vitamins and electrolytes besides just water. | 
