By Hannah Perrin

Running Wild With Bear Grylls is not just a catchy title.

Host Bear Grylls takes celebrities on 48-hour adventure excursions in which they literally run wild. The first episode aired Monday night and starred Zac Efron.

Not only did the 26-year-old actor jump out of a helicopter and repel down a cliff (shirtless), he also ate worms and egg shells. The Neighbors star did say he asked for the hardest level of excursion … and it looks like he got what he wanted!

Unfortunately for us, Zac kept his shirt on for most of the episode, but he did open up about rehab and his love of performing.

Watch the full episode below: