Nick Jonas stripped down to his underwear and swam across an icy, partially frozen lake with Bear Grylls on his show Running Wild.
Jonas and Grylls crossed the lake with their clothes in waterproof bags to keep them dry.
The actual swim was torturous and Jonas took to cheering himself on to get across the lake.
Once to the other side, Grylls suffered something of a wardrobe malfunction.
Undeterred, the pair quickly emerged from the water and set to the task of drying off and warming up.
Jonas had a hard time regaining feeling in his feet, saying that his diabetes often slows circulation to his feet–a problem exacerbated by the icy dip.
To help Jonas regain feeling, Grylls warmed Jonas’ feet up by putting them in his armpits. “Warmest part of the body,” Grylls said before adding, “Well, second warmest part of the body. I wasn’t going to subject Nick to that after that ice swim.”
After everything was said and done, these boys were all warm smiles.
Jonas is not the first hunky celebrity to get shirtless and wild with Grylls. Previous guests who have ditched their shirts while hanging with Grylls include Zac Efron and Jake Gyllenhaal. In fact, Gyllenhaal faced a similar challenge to the one Jonas was confronted with when he crossed an icy river with Grylls (shirtless, naturally) back in 2011.