Washington, March 3 -- Daniel Radcliffe has opened up about his dramatic lifestyle shift, revealing that he once "ran on coffee and cigarettes all day" but now considers himself a self-confessed fitness enthusiast.

The 36-year-old actor, best known for playing the titular wizard in the 'Harry Potter' film franchise, shared insights into his health journey in an interview, as quoted by People magazine.

Radcliffe said he has replaced old habits with a disciplined fitness routine, crediting his "addictive personality" for the intensity he now brings to working out.

"I do weights, circuit training, cardio. I don't look like a person who would be a fitness freak, but I'm pretty intense about it," Radcliffe said.

Reflecting on his past, he ...