Now straighten the leg, driving up with the opposite knee to hip height, so that you are balancing on one foot on the step.

支撑腿的另一侧腿屈膝90度。现将屈腿伸直，将对侧腿抬起，抬止髋的高度，保持单腿在做抬腿时的平衡。

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Now straighten the leg, driving up with the opposite knee to hip height, so that you are balancing on one foot on the step.

支撑腿的另一侧腿屈膝90度。现将屈腿伸直，将对侧腿抬起，抬止髋的高度，保持单腿在做抬腿时的平衡。

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