It seems Bear Grylls has a knack for getting celebrities to strip down to their skivvies. On Running Wild With Bear Grylls, we've seen Zac Efron strip down and Channing Tatum in his underwear, and **w, Nick Jonas has joined the fold. In a new, chilly episode, Bear and Nick have to cross an icy lake to get the finish line. And maybe it's to avoid hypothermia or something (we're **t here to question the science), but both guys have to be in their Underwear to get across. We present the above moment without further comment.