SUNBURY, Pa. — It's open gym time at USA Ninja Challenge in Sunbury, and the kids are taking full advantage. The former Edison School in Sunbury was recently turned into a kids-based "ninja" gym.

KOCHVILLE TWP, MI — There’s a gymnastics center in Saginaw County offering gymnastics classes for kids of all ages, cheerleading, summer camps and “ninja” classes inspired by a TV show. “It’s like ...

Children swing on rings, hoist themselves up cargo nets and balance on one of many foam-shaped pads at the newest ninja gym in the Rochester region. USA Ninja Challenge, which offers a ninja obstacle ...

Have you ever wanted to become a ninja? A new gym swinging into Oak Creek will allow both kids and adults to do just that. Ultimate Ninja s is working to open its first Wisconsin location at 400 W.