我做到40次, 膝关节开始不舒服. 所以, 现在常做high knees walking 替代.

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You are doing very well. It's not necessary to push -HenryLi- 给 HenryLi 发送悄悄话 HenryLi 的博客首页 (94 bytes) () 02/20/2024 postreply 09:57:51

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