Zac Efron Repels Down A Waterfall Shirtless... Because, Why Not?

Here's you weekly dose of man candy.

Zac Efron is a man of few shirts. Whether it's being ripped off at the MTV Movie Awards, or disappearing while horseback riding with Michelle Rodriguez, no one can contest that all shirts are literally repelled from his body.

The actor is yet-again finding himself shirtless, this time alongside Bear Grylls on top of a very high a cliff in the Catskills Mountains. Watch as the actor attempts to repel himself down the side of a waterfall, shirtless for no other reason than "abs."

And if that wasn't enough adventure for you, here's a video of Zac making a heart-pounding crossing between two cliffs.

You can catch the rest of Efron's shirtless adventure through the wild on the season premiere of "Running Wild with Bear Grylls," on July 28 a 8 p.m. ET on NBC.