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Even a little exercise improves fitness

BMJ 2007; 334 doi: http://dx.doi.org/10.1136/bmj.334.7603.1080-b (Published 24 May 2007) Cite this as: BMJ 2007;334:1080

Physical activity improves fitness, which in turn reduces mortality. But does a dose-response relation exist? The question is important to doctors who want to encourage inactive people to exercise more but don't want to demotivate them by …

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