不懂。想知道你为什么跑步？减肥？提高心肺功能？跑步使心情愉快？感觉身体走下坡路了，开始锻炼，一种锻炼方式而已？

来源: lawattaction 于 2019-09-11 06:32:23 [旧帖] [给我悄悄话] 本文已被阅读：次

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