Contestants run, jump, crawl, climb, hang, and swing through crazy obstacles as they compete to become the next American Ninja champion.

Contestants run, jump, crawl, climb, hang, and swing through crazy obstacles as they compete to become the next Team Ninja champion.

The next generation of "American Ninja Warrior" begins, as some of the show's biggest fans now get an opportunity to compete for the chance to be named American Ninja Warrior junior champion.