Some 200 Junior Ninjas from across the U.S. will face off on Head to Head courses in three age brackets: 9 & 10, 11 & 12, and 13 & 14 year-old boys and girls. The courses will feature iconic Ninja Warrior obstacles, including Sonic Swing, Tic Toc, Spin Cycle, and the Warped Wall. We talked to Laurie Hernandez, who co-hosts the show all about it.