PETOSKEY — A new gym is offering kids ages 3-15 the opportunity to learn coordination, build muscle and get out of their comfort zones through parkour, gymnastics and obstacle courses. Cowabunga ...

Kids try to scale the net as a part of their one-day USA Ninja Challenge Camp Hill camp. The gym provides kids with a unique way to stay active during the summer months.

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 ...