Zac Efron, Bear Grylls Are Shirtless Besties in Video

Screen Shot 2014-07-31 at 12.07.17 PM

Zac Efron is just one of many celebrity guests on Bear Grylls’ new adventure show “Running Wild With Bear Grylls.” But if this collection of clips are any indication, Zac is so much more than just a celebrity guest — there was a definite bromance brewing. I guess it helps that the song “Bromance” is playing in the background. Also because they are always high-fiving and ride around shirtless on a quad together though …