首 頁(yè) | 新聞?dòng)⒄Z(yǔ) | 視聽(tīng)英語(yǔ) | 翻譯園地 | 實(shí)用英語(yǔ) | 專欄作家 | 奧運(yùn)英語(yǔ) | 新詞新譯 | 書友天地 | 輕松英語(yǔ)  | 凈臉聯(lián)盟 | 英語(yǔ)論壇 | 少兒英語(yǔ)
    您現(xiàn)在的位置: En_language tips > 輕松英語(yǔ) > 一問(wèn)到底 Dec 26, 2005
     





      Why do we laugh?

    Laughter  
    Why do we laugh? Notes:
    The reasons we laugh, including "contagious" laughter, may be products of evolution.

    Natural laughter is a two-part, spontaneous, response to humor, that has physiological, psychological, and physical benefits.

    Most agree that we laugh when we find something to be humorous, yet different reasons exist for what we find to be humorous. Additionally, different things are humorous to us at different stages of life.

    Laughter, a physiological response to humor, can be broken down into two parts.

    The first is a set of gestures, and the second is the production of sound. The brain forces to conduct both responses simultaneously. From a physiological standpoint, a "sensor" in the brain responds to laughter by triggering other neural circuits in the brain, which, in turn, generate more laughter.

    Oddly enough, laughter is an orderly response, and almost occurs "spontaneously" during pauses at the end of phrases, earning it the name the punctuation effect. Human beings are the only species capable of laughter, and the average adult does so approximately 17 times per day.

    Good health is one of the many benefits of laughter. Laughter reduces our stress levels by reducing the level of stress hormones, and also helps us cope with serious illnesses.

    Physiologically, laughter promotes healing, by lowering the blood pressure, and by increasing the vascular blood flow and the oxygenation of the blood.

    Physical fitness stemming from laughter is a benefit known to few. Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine, or to 15 minutes on a stationary exercise bike. The mere act of laughing exercises the diaphragm, as well as the abdominal, respiratory, facial, leg, and back muscles.

    Another benefit of laughter is that it improves our over-all mental health. Pent up negative emotions, such as anger, fear, and sadness, can cause biochemical changes in our bodies that can produce a harmful effect.

    Laughter provides a harmless outlet for these negative emotions, and provides a coping mechanism for dealing with difficult or stressful situations.

     

     

     

     

     

     

     

     

     



    探測(cè)器
    刺激

     

     

     

     

     

     

     

     



    胸隔膜
    腹部的
    呼吸的

     

     



    發(fā)泄

     
     
     
    Copyright by chinadaily.com.cn. All rights reserved
    版權(quán)聲明:未經(jīng)中國(guó)日?qǐng)?bào)網(wǎng)站許可,任何人不得復(fù)制本欄目?jī)?nèi)容。如需轉(zhuǎn)載請(qǐng)與本網(wǎng)站聯(lián)系。
    None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited.
    十八禁无码免费网站| 亚洲中文字幕视频国产| 中文午夜乱理片无码| 无码人妻精品中文字幕免费东京热 | 无码国产色欲XXXX视频| 中文字幕在线观看| 中文字幕在线无码一区| 久久无码人妻一区二区三区午夜| 亚洲中文字幕丝袜制服一区| 亚洲中文字幕无码久久2017| 久久久精品人妻无码专区不卡| 亚洲av无码无在线观看红杏| 合区精品久久久中文字幕一区 | 中文字幕在线最新在线不卡| 国产精品 中文字幕 亚洲 欧美 | 婷婷色中文字幕综合在线| 国产乱人无码伦av在线a| 亚洲AV无码久久精品蜜桃| 中文字幕无码播放免费| 日本在线中文字幕第一视频| 色婷婷综合久久久久中文| 中文字幕在线亚洲精品| 久久精品中文字幕一区| 最近的中文字幕在线看视频| 亚洲午夜无码片在线观看影院猛| 国产精品亚洲专区无码WEB| 国产精品无码国模私拍视频| 精品久久久无码中文字幕天天| 国产成人无码综合亚洲日韩 | 日韩国产精品无码一区二区三区| 亚洲日韩国产AV无码无码精品| 狠狠精品久久久无码中文字幕| 无码丰满熟妇juliaann与黑人| 日日麻批免费40分钟无码| 中文字幕无码毛片免费看| 久久久久亚洲AV片无码下载蜜桃| 熟妇人妻系列aⅴ无码专区友真希 熟妇人妻系列av无码一区二区 | 精品欧洲AV无码一区二区男男 | 蜜桃成人无码区免费视频网站| 亚洲ⅴ国产v天堂a无码二区| 精品日韩亚洲AV无码|