我虽然这么多年一直锻练身体，但属于慢运动型，跑步15分钟出汗了就停，游泳通常也是15分钟，最多半小时。
Although I have been exercising so many years, I mainly do slow sports. Run 15 minutes and stop when I sweat. Swim 15 minutes. No more than a half of an hour.
统计认为，在那些练冬泳的患病率降低为冷型疾病的60倍，并为其他疾病！
Statistics holds that among those practicing winter swimming the sickness rate decreases for cold-type diseases 60 !
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