Secrets of How to Be an American Ninja Warrior

YH goes behind the scenes at NBC's "American Ninja Warrior" to check out the new course and catch up with the athletes themselves as they prep for battle, including Jessie Graff, David "Flip" Rodriguez, Kevin DeBruin, Stephen Seiver, and Tiana Webberley, as well as hosts Matt Iseman and Akbar Gbaja-Biamila! Find out how the competitors adjust to new challenges and how they stay motivated to keep going even if they fail the course!

The Thundermans Stars Finish Each Other's Sentences

Jack Griffo and Kira Kosarin test their on-screen twin telepathy to see how well they know each other.

The Thundermans Stars Return to The Iconic Lair For New Movie

Chatting with 'The Thundermans Return' stars Jack Griffo at Kira Kosarin at Nick Studios.

Learning The Salsa with Lele Pons & Brandon Armstrong

"Dancing with the Stars" partners teach us the steps to Latin ballroom dance.

Cha Cha Lessons With DWTS Pro Rylee Arnold & Harry Jowsey

Learning basic steps of the cha cha during rehearsal for Season 32 of hit dance competition show.

Twerking Lessons & Memorable Years with DWTS Pair Lele Pons & Brandon Armstrong

Catching up with "Dancing with the Stars" partners during rehearsal.

DWTS Pair Harry Jowsey & Rylee Arnold on Taylor Swift, Memorable Years, & Chemistry

Catching up with influencer and his pro partner during rehearsal for Season 32 of "Dancing With The Stars".

Xochitl Gomez & Val Chmerkovskiy Teach Us The Paso Doble

Learning to dance with Marvel star and "Dancing With The Stars" pro partner.

Xochitl Gomez & Val Chmerkovskiy Prepare for DWTS Disney Night

Marvel star and pro partner explain their dance routine and reveal their fave Disney moments.