Nick Jonas Strips Down To His Boxers On 'Running Wild With Bear Grylls'

The Discovery Channel has premiered a new snippet from the popular ''Running Wild With Bear Grylls' television series.

Previously, Bear has climbed with Channing Tatum, Ben Stiller, Kate Hudson and Barack Obama, this time he is running around with a scantily clad Nick Jonas.

Jonas will appear on the first episode of series 3. The pair travel through the Sierra Nevada mountains and in the clip, Nick and Bear jump into icy cold water in just their underwear.

“My toes are freezing,” Jonas says shivering in the footage. “It’s crazy what happens to your body, the instincts that kick in. You just have to go, push yourself.”

Also appearing in series 3 are Julianne Hough, Courteney Cox, Shaquille O'Neal and Vanessa Hudgens.