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"Upcoming show Running Wild With Bear Grylls sees That Awkward Moment star Zac Efron and the survival expert get all macho by stripping off and dropping down a cliff - a dream come true, right? Two guys, topless in the wilderness. What are you waiting for - watch the clip!      Efron is just one of the stars put through their paces on the series.  Channing Tatum, Ben Stiller, NFL great Deion Sanders, Tom Arnold and Tamron Hall are also taking part in the show, which sees them taken to &amp;quot;remote and wild locations in the US and around the world&amp;quot; for 48 hours by Grylls. Running Wild With Bear Grylls begins on July 28 at 8pm ET on NBC. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/fun/news/a585296/see-zac-efron-and-bear-grylls-strip-and-jump-off-a-cliff-in-new-video/>