This Fast-Growing Fitness Franchise Started as a Way to Get Kids' Energy Out. Now, It's a Pathway to the Olympics.
With ninja-style obstacle racing joining the modern pentathlon, USA Ninja Challenge is now an official Olympic training ...
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Kids conquer obstacles at Richmond’s ‘ninja’ gym
Warped walls, swivel steps, hanging grips: the obstacles are unconventional, but the lessons—for both kids and adults—are universal, at Richmond’s own ninja gym, Traverse Fitness.