This Fast-Growing Fitness Franchise Started as a Way to Get Kids' Energy Out. Now, It's a Pathway to the Olympics.
Carl Stoffers
created: March 28, 2025, 1 p.m. | updated: March 28, 2025, 9:01 p.m.
With ninja-style obstacle racing joining the modern pentathlon, USA Ninja Challenge is now an official Olympic training partner — and business is booming.
7 months, 1 week ago: Entrepreneur