When Jake Gyllenhaal agreed to join Bear Grylls in Iceland for this season’s Man vs. Wild, you might have suspected the Hollywood star would take a backseat and allow himself to be bearded eye-candy. Not so, apparently. In one of two preview clips of Monday’s premiere episode, the Brokeback Mountain star — who happens to be afraid of heights — puts himself in a precarious position. I can’t tell if the whooshing sound is the arctic wind, or Gyllenhaal’s agent hyperventilating. Take a peek.