People walking with an erect gait produced footprints with nearly equal heel and toe depths, the team found.

研究小组发现，人们以直立步态行走时脚跟和脚趾深度几乎相同。

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Balance: Standing on one foot, walking heel-to-toe and standing up without using your arms can help improve balance.

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Finishing things off: 2 millimeters of lining leather, Vibram rubber soles, a steel shank, a leather heel counter and a styrene toe box to harden the front and prevent nasty stubs.

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Shoes with a wide toe box and narrow heel are undeniably ugly, he adds.

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