Extreme ninja warrior

"'American Ninja Warrior' is the name of a television show on which athletes compete to complete difficult obstacle courses. Colloquially, 'Ninja Warrior' refers to this type of obstacle course challenge depicted on the show, built to test strength, agility, balance, and endurance. This. . . book brings readers into the action, explaining what Ninja Warrior is, depicting its coolest maneuvers, and profiling its biggest stars. Most important, it stresses how to perform these acts safely"--Provided by publisher.