United Kingdom, April 16 -- Mark Wahlberg wants to "challenge people to be the best versions of themselves".

The 54-year-old actor recently premiered his 4AM Club Challenge workout series on YouTube, and Mark has rubbished suggestions that his own rigorous workout routine is just for show.

He told E! News: "I really do this. I'll get up at three o'clock-if I get to bed at a decent time. I always try to get eight hours of sleep. This is my daily routine, and I try to get as much done before I go to work or before I'm getting the kids up."

Mark said the series is less about showcasing his own achievements and more about inspiring others.

He said: "We're trying to share what we do and how we become successful, and we want to challenge pe...