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Doctors in Britain are warning of an obesity time bomb，when children who are already overweight grow up.So，what should we do？Exercise more？Eat less？Or both？The government feels it has to take responsibility for this expanding problem.
The cheerful Mr.Pickwick，the hero of the novel by Charles Dickens，is seen in illustrations as someone who is plump and happy.In 18th century paintings beauty is equated with rounded bodies and soft curves.But nowadays being overweight is seen as indicating neither a cheerful character nor beauty but an increased risk of heart disease and stroke.
So what do you do？Diet？Not according to England’s chief medical officer，Sir Liam Donaldson.He says that physical activity is the key for reducing the risks of obesity，cancer and heart disease.And the Health Secretary John Reid even said that being inactive is as serious a risk factor in heart disease as smoking.
So，having bought some cross trainers，how much exercise should you do？According to Sir Liam Donaldson，at least 30 minutes of moderate activity five days a week.Is going to the gym the answer？Luckily for those who find treadmills tedious，the Health Development Agency believes that physical activity that fits into people’s lives may be more effective.They suggest taking the stairs rather than the lift，walking up escalators，playing active games with your children，dancing or gardening.And according to a sports psychologist，Professor Biddle，gyms“are not making the nation fit”，and may even cause harm.
There’s new scientific evidence that too much exercise may actually be bad for you.Scientists at the University of Ulster have found that unaccustomed exercise releases dangerous free radicals that can adversely affect normal function in unfit people.The only people who should push their bodies to that level of exercise on a regular basis are trained athletes.
So，should we forget about gyms and follow some experts’advice to increase exercise in our daily life？After all，getting off the bus a stop early and walking the rest of the way can’t do any harm！One final thought.How come past generations lacked gym facilities but were leaner and fitter than people today？
重点词汇：
obesity 肥胖（n.）
cheerful 高兴的（adj.）
curve 曲线（n.）
illustration 例证（n.）
plump 胖乎乎的（adj.）
stroke 中风（n.）
treadmill 跑步机（n.）
radical 极端的；极端分子（adj./n.）
adversely 不利地（adv.）(https://www.daowen.com)
athlete 运动员（n.）
①The cheerful Mr.Pickwick，the hero of the novel by Charles Dickens，is seen in illustrations as someone who is plump and happy.
【结构分析】主语部分为“N1，N2+后置定语”结构，Mr.Pickwick与the hero为同位语，is seen as是谓语部分，someone是介词as的宾语，who引导定语从句修饰someone。
②But nowadays being overweight is seen as indicating neither a cheerful character nor beauty but an increased risk of heart disease and stroke.
【结构分析】主语为动名词结构being overweight，谓语部分为被动语态is seen as，介词as后面的宾语结构为neither
nor
but（既不是……也不是……而是）。
③They suggest taking the stairs rather than the lift，walking up escalators，playing active games with your children，dancing or gardening.
【结构分析】本句是个简单句，主干为“they suggest+宾语”，宾语由doing形式的短语充当。在宾语中有两个并列结构，第一个为大并列taking the stairs，walking up escalators，playing active games，dancing or gardening，这个并列结构的一个成分中还有一个由rather than引导的并列结构，一定要注意区分。
④Scientists at the University of Ulster have found that unaccustomed exercise releases dangerous free radicals that can adversely affect normal function in unfit people.
【结构分析】主语为Scientists，谓语为have found，that引导宾语从句。宾语从句中主语为exercise，谓语为releases，宾语为radicals，后面又有that引导的从句，做定语修饰radicals。定语从句中主语为that（radicals），谓语为can affect，宾语为function。因此这是个从句里含从句的句子。
全文翻译：
英国的医生提醒人们，当那些体重已经超重的孩子长大以后，警惕“肥胖”这一定时炸弹。那我们应该做些什么？多运动？少吃饭？抑或是两者兼顾？英国政府觉得应当为这一不断扩大的问题负起责任。
狄更斯小说当中的主人公——快乐的匹克威克先生被塑造成一个胖乎乎又很开心的角色。在18世纪，画中的美人都被赋予丰满的体态和柔美的曲线。而现如今，体重超重却不再被视为快乐或是美丽，而是罹患心脏病和中风的风险。
那么你该如何应对？节食吗？英国政府首席医疗官利亚姆·唐纳森先生并不这么认为。他说，体育锻炼才是减少超重、癌症以及心脏病风险的关键。卫生大臣约翰·里德甚至说，怠惰就像吸烟一样，是引发心脏病的危险因素。
因此，如果已经购买了一些健身器材，你的运动量应该多大呢？亚姆·唐纳森先生说，每周五次至少三十分钟的中等强度的活动。得去健身房锻炼吗？那些发现跑步机很乏味的人们是很幸运的。英国卫生发展局认为，融入人们生活中的运动才更有效果。他们建议以爬楼梯取代电梯；沿着扶梯向上走；和孩子们玩一些竞技类游戏；跳跳舞或者种种花。运动心理学家比德尔教授认为，健身房“不但不能让人们保持健康”，甚至会带来危害。
有新的科学证据表明，过多的运动其实是有害的。阿尔斯特大学的科学家们发现不寻常的运动会释放危险的自由基，对不健康人群的正常身体机能有不良影响。只有经过长期训练的运动员，才可以让他们的身体经受那种水平的运动。
那么，我们是不是应该忘记健身房，并按照专家们的建议在日常生活中进行锻炼呢？毕竟提前一站下车然后步行走完剩下的路不会有半点危害！最后再想想，为何过去的人们缺乏健身设施，却比现在的人们苗条，比现在的人们健康呢？