一般说来，对于大多数跑步者，30 - 50英里是一个很好的目标。
Generally, 30-50 miles is a good goal for most competitive runners.
对于大多数跑步者，只需18周的最少训练(包括数量和品质)，马拉松是触手可及的。
Just 18 weeks of minimal training (both quantity and quality) puts the marathon within the reach of most runners.
对于大多数跑步者，通过嘴进行呼吸，而不是鼻子，可能是他们在跑步时吸入更多空气的最有效方法。
Breathe in and out through your mouth. This may be the most effective way for most runners to take in more air as they run, as opposed to breathing through the nose.
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