Too much distancework can convert fast twitch muscle fibres into slow twitch fibres and can actually decrease an athlete's speed over time.
太多的长途运动会造成快肌纤维转换成慢肌纤维，并随着时间的推移，逐渐减慢运动员的速度。
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This text introduced the MFC to the management that window way arrange, and explain that this method can simplify to weave the distancework for an example.