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。
If you are on the correct spot, a muscle should flex as you move your foot up and down.
如果你在正确的地点后，肌肉要当你沿着弯曲你的脚向上和向下。
Plantar flex: the downward flexing of the foot so that the forefoot moves further away from the leg.
脚底向下的弯折，表现为当你做此动作时你的前脚会远离腿部。
Plantar flex: the downward flexing of the foot so that the forefoot moves further away from the leg.
脚底向下的弯折，表现为当你做此动作时你的前脚会远离腿部。
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