Dwayne Johnson was profiled in an in-depth piece by Fortune last week, where he told reporter Daniel Roberts about the challenges he has faced and overcome in his life, and what motivates him to work a ferocious pace on a plethora of projects, be it in front of a camera or with his production company 7 Bucks Entertainment.

During the course of the interview, the subject of steroids came up. The Rock has admitted in the past that he tried steroids when he was younger (in an interview with Josh Horowitz of MTV in 2009 to promote Race to Witch Mountain, The Rock said: “Me and my buddies tried it back in the day when I was 18 or 19. Didn’t know what we were doing.”)

But in the piece with Fortune, Johnson was clear that aside from that period of experimentation, he has led a steroid-free life. He also had a very clear message to those who take to Internet forums and doubt the veracity of his physical preparation. “Sure, you get a lot of people out there who will suspect, and say sh*t,” he told Roberts. “They want to negate the hard work you put in.”

For The Rock, sanctuary is found in the daily grind in the gym. “Training is my anchor. Being on a regimented schedule, setting a goal, failing at a goal. It’s the philosophies of being an athlete that carry me today.”

In the behind-the-scenes video below, The Rock talks about a game-changing incident during his early teens that would have a huge impact on how he approached life. Check it out:

Today also marks the official release of Hercules on DVD. The Rock gave our own Matt Tuthill an insight into the workout, the meal plan and the won’t-quit attitude that forged Hercules earlier this year. And to Mark The DVD release, enter our Hercules DVD/Blu-ray giveaway!