He’s known as the fittest guy in Hollywood.
And Jake Gyllenhaal lived up to his name when he joined Man vs. Wild star Bear Grylls on a gruelling, two-day survival experience in Iceland for the hit show.
“The wild is always very revealing – not only physically but mentally,” Bear added.
“You’ve got to smile when it’s driving horizontal hail and be able to face your fears and just get on and do it – and on both of those accounts, Jake came up strong.”












