India, Dec. 12 -- Dick Van Dyke is opening up about turning 100. Ahead of his milestone birthday on December 13, the Mary Poppins star said in a recent appearance on ABC's Nightline that a century is "not enough." He admitted to host Chris Connelly that he plans to "live more."

The Chitty Chitty Bang Bang star is set to celebrate his birthday on Saturday with his wife, Arlene Silver. Reflecting on his age, Van Dyke told Connelly that exercising regularly has kept him in good shape.

"I am so lucky. I don't have any ache or pain," he said, revealing that he goes to the gym three days a week along with his "health nut" wife. "We work out. And I think that has saved me from the pain." "That's good advice for anybody," he added.

When asked ...