这就是为什么当有些人开始跑步的时候却发现他们的体重没有下降反而有所上升的一个原因。
It's one reason why some people find themselves not losing weight or even gaining weight when they start running.
不要和一些很快的跑步者一起开始，你很有可能试着跟上他们。
Don't start yourself withfaster runners because you'll most likely try to keep up with them.
他们可能开始是麻木的，但是跑步几分钟之后应该能暖和起来。
They may feel numb at first, but they should warm up a few minutes into your run.
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