Are you working for a big test？ If so， youmay study very hard. After studying for sometime， you may want to play some basketball，and then go on studying. Researchers1 havecollected2 information over the years， andthey have seen a connection3 between exerciseand brain4 development5.

Judy Cameron is a researcher atOregon Health and Science University. Shestudies brain development. According toher research6， exercise may make bloodvessels7 stronger， and they will work better.Those vessels in the brain will be stronger，too. Cameron says， it makes people con -centrate8 better. She says， “As we know，exercise is good for the heart. But exercisecan make real changes in the brain.”

你正在為一場大考做準備嗎？如果是的話，你可能會非常努力地學(xué)習(xí)。學(xué)習(xí)一段時間后，你可能想打打籃球，然后再繼續(xù)學(xué)習(xí)。研究人員收集了多年的數(shù)據(jù)信息，他們發(fā)現(xiàn)了運動與大腦發(fā)育之間的聯(lián)系。

朱迪·卡梅倫是俄勒岡健康與科學(xué)大學(xué)的研究員。她研究大腦發(fā)育。根據(jù)她的研究，運動可以使血管更強健，從而更好地發(fā)揮作用。大腦中的血管也會更強健。卡梅倫說，這使人們能更好地集中注意力。她說：“眾所周知，運動對心臟有好處。但運動也能夠使大腦真正有所改變?！?/p>

How does exercise workon brain development？ It caneven be seen in babies. Ifbabies move9 a lot， they showgreater brain development. Ifbabies don’t do much exercise，they don’t show suchdevelopment. Exercise makesbabies’brains become smarter.With babies， even if they only movea little more， their brain can havebig changes.

Margaret Barnes is a doctor. Shebelieves exercise is very important forbabies. Some children have learningdisabilities10 in primary school or highschool. She thinks many of them have thesame reason. When those children werebabies， they didn’t have enough exercise.“Babies need movement， because it doesgood to their five senses11，”says Barnes.“They need to make a connection betweenbody and brain. It helps them rememberthings. In this way， when they grow up，children will begin to connect physicalactivity with higher learning.”

Exercise are not only good for babies’brains. Older people can make their brainssmarter by exercising， too. Researchers atCornell University studied a group of old"people. They are from seventy to seventynineyears old. According to their study，the old people exercise just three hours aweek， and they remember things better.The exercise doesn’t have to be verydifficult. But it does have to increase12the heart rate13. Also， just like theexercise for babies， exercise for olderpeople cannot be too simple. For the oldpeople， the brain may not be used for along time. Learning some new thingshelps the brain work better. Yoga andtai-chi are good examples.

運動是如何促進大腦發(fā)育的呢？這甚至可以在嬰兒身上看到。如果嬰兒經(jīng)?；顒樱麄兊拇竽X發(fā)育會更好。如果嬰兒不怎么活動，他們就不會發(fā)育得這樣好。運動使嬰兒的大腦更聰明。對于嬰兒來說，即使他們只是多動一點，他們的大腦也會有很大的變化。

瑪格麗特·巴恩斯是一名醫(yī)生。她認為運動對嬰兒非常重要。有些孩子在小學(xué)或高中時有學(xué)習(xí)障礙。她認為許多這樣的問題都有著相同的原因。當(dāng)這些孩子還是嬰兒時，他們沒有進行足夠的運動。“嬰兒需要運動，因為這對他們的五種感官有益?！卑投魉拐f，“他們需要在身體和大腦之間建立聯(lián)系。這有助于增強他們的記憶力。這樣，當(dāng)他們長大后，孩子們將開始將身體鍛煉與更高深的知識聯(lián)系起來?！?/p>

運動不僅對嬰兒的大腦有好處，老年人也可以通過鍛煉來使他們的大腦更聰明?？的螤柎髮W(xué)的研究人員研究了一群老人。他們的年齡從七十歲到七十九歲不等。根據(jù)他們的研究，老年人每周只鍛煉三個小時，然后他們的記憶力變好了。練習(xí)不需要很難，但它必須增加心率。此外，就像嬰兒的運動一樣，老年人的運動也不能太簡單。對于老年人來說，大腦可能很長一段時間都沒有使用過了。學(xué)習(xí)一些新事物有助于使大腦更好地工作。瑜伽或太極拳就是很好的例子。

For most people， if a kind ofphysical activity increases theheart rate， it is helpful. Thegoal14 is to make the blood runquicker in the brain. Yourbrain can be smarter， evenif you exercise two tothree hours a week.

對于大多數(shù)人來說，只要一種體育活動可以提高心率，那它就是有益的。這一活動目標是使血液在大腦中流動得更快。即使你每周只鍛煉兩到三個小時，你的大腦也會更聰明。

（英語原文選自：wonderopolis.org）