The Wall Street Journal on Instagram: "When a new breed of super shoes hit the distance-running scene nearly a decade ago, they turned the sport on its head. The governing body of running, World Athletics, scrambled to rein in the Frankenshoes.⁠ ⁠ But recently, something strange has started to happen. Shoe companies started going over that limit, again and again, on purpose. Soles are now rising like cheese souffles, and runners are snapping up the super-sized shoes—even if they carry the risk o

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