Slot your foot (big toe up, pinky toe down) into the crack up to the arch of your foot, keeping your knee out to the side.

把你的脚尖（大脚趾在上，小指在下）楔入裂缝中去，直到你的足弓的部分，膝盖保持向外。

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The unshod runners' style causes more flex in the foot's springlike arch ankle and knee and engages more foot and calf muscles blunting the impact on the body and making for a more comfortable "ride."

赤足的姿势引起了足部海面拱体、踝骨和膝盖更大的弯曲，更多地利用了足部和腿肚上的肌肉的力量，从而减弱了冲击对人体产生的影响，使人跑起来更舒服些。

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You may need orthotics to help your feet work normally during physical activity, especially if you are active and have knee pain or pain in the arch or heel area of your foot.

或许有需要做足部矫正术来使你的脚在运动时正常运做，特别是当你很活泼好动，且伴随有膝痛，脚后跟跟脚弓痛。

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