Smart Exercise锻炼使人聪明

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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.”

你正在为一场大考做准备吗？如果是的话，你可能会非常努力地学习。（剩余2534字）