Working out two days a week is enough to help improve your aerobic fitness and maintain your health if you are in fairly good shape already.
工作两天，一个星期就足够了，以帮助提高你的有氧健身和维持您的健康，如果你已经是相当不错的形状。
Working out two days a week is enough to help improve your aerobic fitness and maintain your health if you are in fairly good shape already.
工作两天，一个星期就足够了，以帮助提高你的有氧健身和维持您的健康，如果你已经是相当不错的形状。
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