练收紧核心最好的机会是开车的时候，尤其等红灯，呼一口气的同时收紧四块肌，hold五秒重复

来源: GoGym 于 2023-11-05 09:15:26 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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