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If crosswords are too easy and Sudoku a touch boring, why not go and climb a tree? 如果你觉得填字游戏太过简单，数独（一种运用纸、笔进行演算的逻辑游戏）又难的有点单调，为什么不去爬爬树呢？ A study found that childish pastimes such as climbing trees, running barefoot and crawling dramatically boost memory. 一项研究证明，爬树、赤脚跑、爬行等儿时的娱乐活动能够有效的提高记忆力。 Working memory - the type of memory we use every day to remember phone numbers, follow directions and use a shopping list - improved by 50 per cent. 这些儿童游戏能让我们的工作记忆——即我们每天用以记住电话号码，认清方位，写出购物清单的记忆能力——提升了50%之多。 The University of North Florida researchers put 72 men and women aged between 18 and 59 through a test of working memory, in which they had to remember lists of numbers in reverse order. 北佛罗里达大学的研究人员对72名年龄在18-59岁之间的男女进行了研究，他们让这些调查对象记住若干写满倒序数字的数列，从而测定他们的工作记忆力。 Some then spent two hours doing a range of obstacle course-like activities. 之后，一些调查对象参加了2小时类似障碍跑之类的体育活动。 These included climbing trees, running barefoot and crawling along a narrow beam. | 
