甚至为直立行走增加平衡的前弯脊柱“在结构上不属于最理想的解决方式”，她说，因为它可导致身体不稳定，甚至椎骨骨折。
Even the basic forward curve that promotes balance in upright walking is “not a structurally ideal solution, ” she said, since it can lead to instability and even fractured vertebrae.
膝关节微屈站立，双脚与髋同宽，脚尖向前。膝关节在脚尖正上方。身体前弯与地面平行。
Stand with knees bent slightly, feet at hip distance apart, toes forward. Knees should be directly over toes. Bend forward so upper body is parallel to floor.
腹直肌使躯干前弯向直腿。
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