Your calves and buttocks are partners who both move forward while being resisted back by your knees and internal thighs and groins moving back.

小腿向前的动作是 轻微的 ，但你必须感觉到它。把大腿的上部往回拉这样它们在脚踝的正上方。

youdao

Your calves and buttocks are partners who both move forward while being resisted back by your knees and internal thighs and groins moving back.

小腿向前的动作是 轻微的 ，但你必须感觉到它。把大腿的上部往回拉这样它们在脚踝的正上方。

youdao