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一天需要八杯水吗
添加时间:2014-06-30 16:06:00 浏览次数: 作者:未知
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  • If you're confused about how much water you really need, I'm not surprised. Conflicting advice in recent headlines appears to contradict the old "8-a-day" advice we all grew up with. Is it necessary to chug down eight glasses of water daily, or is this recommendation exaggerated and out of date?

    We've heard for years that eight glasses of water daily is the minimum necessary to keep healthy. Your weight loss and health depend on it. Drink the minimum and see clearer skin, better sleep, better sex, improved vision. We're warned of impending1 dehydration2 without at least eight glasses. But, the tide has turned, away from liquid nutrition toward examining your daily diet, including what you eat, as well as what you drink.

    The answer is... you need what you need! If it's summer, you need more. If you're exercising, you need more. If you're a "normal" sedentary person, who's not perspiring3, and not exercising more than 15-20 minutes daily, Dr. Heinz Valtin of Dartmouth Medical School says you need no more than four glasses of water daily. Most beverages4 can be counted as part of your daily fluid intake5. Although the World Health Organization recommends that everyone drink a minimum of two liters of water daily, or about eight cups, the old "8X8" rule is based on studies performed on people under extraordinary circumstances; including soldiers at high altitude and hospitalized patients -- what you and I need is different.

     9级    英文科普 
     单词标签: impending  dehydration  perspiring  beverages  intake 


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    1 impending [im'pendiŋ] 3qHzdb   第11级
    a.imminent, about to come or happen
    参考例句:
    • Against a background of impending famine, heavy fighting took place. 即将发生饥荒之时,严重的战乱爆发了。
    • The king convoke parliament to cope with the impending danger. 国王召开国会以应付迫近眉睫的危险。
    2 dehydration [ˌdi:haɪ'dreɪʃn] UYkzX   第11级
    n.脱水,干燥
    参考例句:
    • He died from severe dehydration. 他死于严重脱水。
    • The eyes are often retracted from dehydration. 眼睛常因脱水而凹陷。
    3 perspiring [pəs'paɪərɪŋ] 0818633761fb971685d884c4c363dad6   第10级
    v.出汗,流汗( perspire的现在分词 )
    参考例句:
    • He had been working hard and was perspiring profusely. 他一直在努力干活,身上大汗淋漓的。 来自《简明英汉词典》
    • So they "went it lively," panting and perspiring with the work. 于是他们就“痛痛快快地比一比”了,结果比得两个人气喘吁吁、汗流浃背。 来自英汉文学 - 汤姆历险
    4 beverages [be'vərɪdʒɪz] eb693dc3e09666bb339be2c419d0478e   第7级
    n.饮料( beverage的名词复数 )
    参考例句:
    • laws governing the sale of alcoholic beverages 控制酒类销售的法规
    • regulations governing the sale of alcoholic beverages 含酒精饮料的销售管理条例
    5 intake [ˈɪnteɪk] 44cyQ   第7级
    n.吸入,纳入;进气口,入口
    参考例句:
    • Reduce your salt intake. 减少盐的摄入量。
    • There was a horrified intake of breath from every child. 所有的孩子都害怕地倒抽了一口凉气。

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