It's this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.

马萨诸塞州塞勒姆大学的运动科学助理教授贾克琳·诺伯格说，正是这种奇特的形式使竞走成为一项有吸引力的活动。

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You’d be stuck contemplating the mass of idling cars, a mental exercise that is much less pleasant than dreaming about a beach and much less useful than mulling what to do once you get off the road.

史默伍德博士说：“人们认为心不在焉是件坏事，但是如果我们在做无聊工作的时候不能出神一下 那生活将会太可怕了。” 明尼苏达大学心理学家、该领域先驱者之一埃里克 科林格认为：“想象一下 如果你的精神不能从交通阻塞中解脱出来，你会在这受困的汽车大军中苦思冥想，智力锻炼没有幻想着海滩来得那么愉快，也没有思考着驶离公路后干什么来得有用。

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The researchers say that an environment based on mass transit influences health, because rail users are get exercise walking to and from stops.

研究人员说，基于轨道交通环境影响健康的水平，因为铁路使用者正在走路锻炼。

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Earlier this month, state workers performed mass physical exercise and were encouraged to climb an 8km (five mile) concrete staircase built into a hillside outside Ashgabat.

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It follows claims that low-flying jets on a training exercise recently led to mass panic, with kittiwake chicks falling into the sea and drowning.

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"When someone starts to exercise, they might increase muscle mass as well, and therefore might be frustrated not to see too much change on the scale in terms of total weight, " she says.

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