尽管费用和私人健身中心相比会低，但是课堂通常称为了填鸭式的高端服务，老板格雷格·贾斯特斯说。
While less expensive than personal training, the classes often act as a "feeder" for higher-end services, said the owner, Greg Justice.
如果在科罗拉多州的私人教练马克·卢森让他的教员适应在课堂上的音乐，那么一览表以“我一直在铁路上工作”开头。
IF Mark Roozen, a personal trainer in Colorado Springs, set his group conditioning classes to music, the playlist could start with "I've Been Working on the Railroad."
如果在科罗拉多州的私人教练马克·卢森让他的教员适应在课堂上的音乐，那么一览表以“我一直在铁路上工作”开头。
IF Mark Roozen, a personal trainer in Colorado Springs, set his group conditioning classes to music, the playlist could start with "I've Been Working on the Railroad."
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