Shirtless Zac Efron In First Look Sneak Peek Clips From 'Running Wild With Bear Grylls' [VIDEOS] 'Neighbors' Hunk Jumps Off A Cliff With 'Man Vs. Wild' Star

Next week, NBC's new series, Running Wild with Bear Grylls, will debut with its first special guest star, Zac Efron. In some special sneak peek clips released this week, we get a great taste of what this series holds for viewers, and a great view of the shirtless Hollywood hunk as he and Bear take on the wilderness!

In the first clip we're sharing with you today, Bear and Zac are seen on top of a high cliff, about to jump off into some water. Though Zac is quick to take his shirt off with Bear (in order to have something dry on for when they get out of the water), we see the star a bit hesitant and nervous as he eyes the jump he's about to take. To motivate them, Bear throws their backpacks into the water so that they have to go after them.

The rest is quite breathtaking and intense. Check out this clip right here:

In the other clip we're sharing with you today, Bear definitely has Zac Efron's fans on the edge of their respective seats. The heartthrob has to rappel across a cliff, facing down into certain death. Efron is about 150 feet above the ground, so every breath and movement counts for the movie star.

Take a looks at this intense clip right here:

What do you think of these sneak peek clips of this new series? Let us know in the comments section below!

Running Wild with Bear Grills premieres Monday, July 28th at 8pm EST on NBC.

(via UPROXX)