While it’s no secret that Zac Efron completed a stint in rehab last year, the actor has rarely opened up about the circumstances which led to his decision—until now, that is. The 26-year-old hunk appeared in the first episode of NBC’s Running Wild with Bear Grylls and got candid when it came to the topic of his time in treatment, sharing insight into his life before rehab while revealing that he hit rock bottom due to the media’s fascination with his personal life. Efron noted that the constant pressure caused him to seek out unhealthy coping mechanisms as a means to deal with his everyday life.