第二种算是快班的学生干的


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送交者: HunHunSheng 于 2007-10-25, 14:58:29:

回答: It depends. 第二种有个名词叫做interval training 由 HunHunSheng 于 2007-10-25, 14:53:42:

Other advanced work out include

Hill repeats
Farletck
Tempo Run

etc.
If you don't care about speed, you don't have to do these. These of course help fitness but they also increase chance of injuries.




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