Ninja fitness class provides a fun, fierce workout - Fredericksburg.com (blog)

Ninja fitness class provides a fun, fierce workout Fredericksburg.com (blog) BY DONYA CURRIE. The workout starts typically enough, with a slow jog around the Polar Fitness studio in Spotsylvania County. But a few minutes into the weekly “Nothing to Ninja” class, people are doing handstands against a padded wall, vaulting over ...