Zac Efron & Bear Grylls on Running Wild with Bear Grylls (2014)

Professional wild man Bear Grylls debuted his new adventure series Running Wild with Bear Grylls this year. The series features Bear embarking on grand adventures with various celebrities and the show got off to a great start, featuring Hollywood heartthrob Zac Efron at Bear’s side for the very first episode. The duo even got shirtless during their descent down a waterfall. Between the hand-holding, cave cuddling (complete with a forehead kiss) and being strapped together shirtless, the episode certainly demonstrated the great chemistry between the men.