如何在最热的天气里保持凉爽
文章来源:未知 文章作者:enread 发布时间:2018-05-20 06:53 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
Wear loose clothing, mostly cotton
 
This seems obvious, but wearing clothing that is loose rather than tight allows air to flow past the skin. This carries away the warmth that your body generates and allows cooler air to flow back in. Clothes like tight jeans or a snug1 jacket trap that heat against your skin, which just makes you feel hotter. On the other hand, less fitted clothes like loose pants, a flowy shirt, or a dress all allow air to keep circulating.
 
The type of fabric2 you wear has an influence, too. When it's really hot out, materials that "breathe" -- allowing the flow of air through the fabric itself -- also work to keep you cool. Cotton and linen3 are among the most breathable fabrics4, so look for clothes made of those substances, as opposed to less permeable synthetics5.
 
Apply cold packs strategically
 
Your body regulates its temperature via a small peanut-shaped section of the brain known as the hypothalamus. This region works almost like a thermostat6 in a home, turning the temperature up or down based on various factors -- such as how cold or hot the skin is.
 
Certain parts of the skin have a larger influence than others. These areas are called pulse points. They get their name because you can feel your pulse there, and the reason you can do that is because vessels7 are so close to the edge of your skin that one can easily hear or feel the flow of blood.
 
When you want to lower your body temperature, chilling those pulse points with cold water or ice sends a signal to the brain that says, "I'm cold." This tricks your brain into turning down its thermostat. Focus on pulse points that are easy to reach: the insides of your wrists, the area around your temple, and your neck. Holding an ice pack or even a cold washcloth against the skin on these regions will make your entire body feel cooler.
 
Count your steps
 
Exercising in extreme heat is usually not recommended. That's because exercise actually heats the body up further and causes you to sweat, both of which make you feel more uncomfortable. When you're sweating more, you're also at greater risk of dehydration8. So when it's terribly hot outside, make sure you don't exercise too much.
 
Hydrate
 
Speaking of sweat, that's the best method our bodies have evolved to regulate body temperatures. Sweating helps to cool off the skin, which keeps the rest of us cool. And the human body can regulate itself far more easily when it's fully9 hydrated.
 
Proper hydration regulates blood flow, which, in turn, helps to determine the temperature of the skin. That then tells our master thermostat, the hypothalamus, how to regulate our internal temperature.
 
The sad part is that, by the time you feel thirsty, you are already dehydrated. So, to prevent dehydration and its negative effects, you should be drinking water throughout the day on a regular basis -- even before you feel thirst.


点击收听单词发音收听单词发音  

1 snug 3TvzG     
adj.温暖舒适的,合身的,安全的;v.使整洁干净,舒适地依靠,紧贴;n.(英)酒吧里的私房
参考例句:
  • He showed us into a snug little sitting room.他领我们走进了一间温暖而舒适的小客厅。
  • She had a small but snug home.她有个小小的但很舒适的家。
2 fabric 3hezG     
n.织物,织品,布;构造,结构,组织
参考例句:
  • The fabric will spot easily.这种织品很容易玷污。
  • I don't like the pattern on the fabric.我不喜欢那块布料上的图案。
3 linen W3LyK     
n.亚麻布,亚麻线,亚麻制品;adj.亚麻布制的,亚麻的
参考例句:
  • The worker is starching the linen.这名工人正在给亚麻布上浆。
  • Fine linen and cotton fabrics were known as well as wool.精细的亚麻织品和棉织品像羊毛一样闻名遐迩。
4 fabrics 678996eb9c1fa810d3b0cecef6c792b4     
织物( fabric的名词复数 ); 布; 构造; (建筑物的)结构(如墙、地面、屋顶):质地
参考例句:
  • cotton fabrics and synthetics 棉织物与合成织物
  • The fabrics are merchandised through a network of dealers. 通过经销网点销售纺织品。
5 synthetics TgKzvc     
n.化学合成物
参考例句:
  • cotton fabrics and synthetics 棉织物与合成织物
  • It is a universally applicable thickener for printing on the synthetics. 特别适合用做纺织印染工业中人造合成纤维的印染增稠剂。
6 thermostat PGhyb     
n.恒温器
参考例句:
  • The thermostat is connected by a link to the carburetor.恒温控制器是由一根连杆与汽化器相连的。
  • The temperature is controlled by electronic thermostat with high accuracy.电子恒温器,准确性高。
7 vessels fc9307c2593b522954eadb3ee6c57480     
n.血管( vessel的名词复数 );船;容器;(具有特殊品质或接受特殊品质的)人
参考例句:
  • The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
  • All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》
8 dehydration UYkzX     
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。
9 fully Gfuzd     
adv.完全地,全部地,彻底地;充分地
参考例句:
  • The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气,然后全部呼出。
  • They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。
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