后来还见到一个医案：
周某，男，60岁，柳州奇石玩家，身高1.8米，可谓高大”威猛”，然而，其妻今晨到草舍来求诊糖尿病西药所致的耳鸣，话题顺便谈起其夫的身体，说他气短，无故常易疲劳，多汗，极易感冒等等，询其生活习惯时说：几乎近三十年因阳萎早泄根本没有性生活！再问之：是否每天早起空腹先喝凉开水？答曰：有此习惯已几十年！而且平常喝的大多都是冷水……
所以，从这个案例来说，喝水还真与肾功能有关系的。
中医认为水进入体内之后，要为我们所利用，就需要能量的推动，我们把这个能量叫做阳气。水越凉，需要消耗的阳气就越多。当阳气长期超负荷运转之后，逐渐就会有一些不能运化的水被身体贮存起来。但又不能被人所利用，所谓放错了地方的资源就是垃圾。当这些不能利用的水越来越多，我们的身体肯定会越来越臃肿。如果这些水被身体放到面部，面部就会长斑。
下面引用中医大家刘渡舟老先生书里的一些内容：
水为阴邪，上凌于心，心之华在面，心阳不振，荣卫凝涩，则面必见黧黑，名曰“水色"，其甚者，或在额‧颊、鼻柱‧唇口、下颏等处，皮里肉外，出现类似"色素沉着"之黑斑，名叫"水斑"。心开窍于舌，心阳不足，则舌质必然淡嫩；火冷津凝，水不化津，故舌苔水滑欲滴。
换句话说，多喝水可以美容的话法，也是靠不住的。
看两张表示水湿的舌头照片：
下面是水气为病的一些表现：
(一) 气上冲胸：心阳上虚，水气上冲，其证有二：典型者，患者自觉心下有二股气向心胸或咽喉上冲；不典型者，不见明显的气上冲，但从下往上依次出现的或胀、 或满、或悸等等见证十分明确，故也不难辨认为是水气上冲病证。
(二) 胸满：水气上冲，胸阳受敌，阴霾用事，则见胸满。此证以夜间为甚，气候温和则轻，冷冽则加重。往往伴见气短，咽喉不利，如有物梗，呼吸受阻等证。
(三) 心悸：心悸的出现有二：在气上冲胸咽时，则心悸随之出现。另一种是自觉左侧颈部之血管发生酸胀与疼痛时，则立即出现心悸之证。心悸每发作于晨起，夜卧、饱食之后，呈阵发性，轻者可以自止。
(四) 短气：心阳虚衰，膻中之气不充，又被水寒凝滞，则出现"短气"之证。如身体不动，或行路缓慢一般则不会出现短气。如登楼爬高，少顷则觉气短发憋，呼吸紧促而常伴咽喉有痰使人痛苦万分。严重者则可令人周身出汗、小便失禁，失气频频，心脏悸动如出。
治法什么的，我就不引了。
当然了，也别吓着了，该喝就喝，毕竟文章里也说了：
If you are thirsty because it is hot or you have exercised, don’t hesitate to drink water.
那么什么时候喝水呢？
要知道一天8杯水的说法是1940年才提出来的，那1940年以前的人又是谁来教他们喝水的呢？
很明显，这不需要人来教，就像饿了要吃饭一样的，都是人的本能，所以在喝水这个事上，尊重生命的本能就好：渴了就喝水。
当然，讲究一点呢，就是要喝温水，要慢慢喝。
当然了，我说的也只是一种观点，仅供参考，不要来抬杠，杠就是你对。
最后，把英文的参考文献附在后面。
How much water should you drink?
We’ve heard it for decades:Drink at least 8 cups of water a day. Not only can three out of four adults recite this bit of health wisdom, but many even feel guilty if they don’t meet the standard. However, this advice may be based on a misunderstanding. Some trace it to the 1940s, when the National Academy of Sciences published a recommended daily allowance of 1 milliliter of fluid for each calorie burned—a little over 8 cups for a typical 2,000-calorie diet. However, the statement also explained that most of this fluid could be obtained via the liquid contained in foods. Regardless, the 8-glasses-a-day dictum caught on. Today people frequently consume much more as they tote giant water bottles, buy super-size soft drinks, and follow programs that promise you can lose weight by drinking as much as a quart of fluid at a time. Also, those who choose to participate in such a diet may forget an important fact if they’re coffee drinkers: Caffeine is a diuretic – it encourages the kidneys to produce urine so effectively that it may contribute to mild dehydration. In moderation, there is little to worry about; but heavy consumers of caffeine may find a faster flow of fluids through their body, requiring a greater consumption of non-caffeinated liquids. In a 2000 survey conducted for Rockefeller University and the International Bottled Water Association, 2,818 adults in 14 cities reported drinking about 6 cups of water a day—a result that was presented as alarming evidence that Americans are becoming dehydrated. But if you include the sodas, coffee, tea, milk, juice, sports drinks, and alcoholic beverages these respondents drank, their average fluid consumption was 17.6 cups a day—enough to have you urinating every waking hour, even if you don’t have any problem with bladder capacity. More recently, a kidney specialist at Dartmouth Medical School searched the scientific literature for studies that might support the idea that people need 8 glasses of fluid a day. Not only did he determine that no such evidence exists, but concluded that the research that has been done "strongly suggests that such large amounts are not needed." Fluids and incontinence If you have an incontinence problem, the below tips might help improve your symptoms. Unless you engage in strenuous exercise or have a medical condition (such as a propensity toward forming kidney stones) that requires more fluid consumption: Aim for no more than 6–8 cups of fluid (from all sources) each day.Don’t drink more than 8 ounces at a time.Don’t guzzle. The faster your bladder fills, the more likely you are to feel urgency.Minimize caffeinated and carbonated drinks.Decrease or eliminate alcohol consumption.If you are thirsty because it is hot or you have exercised, don’t hesitate to drink water.
