Dick Van Dyke is nearing his 100th birthday this December, and the Mary Poppins star continues to defy age with his energy, charm, and humor. Though he rarely appears in public, a new photo of him at a Malibu gym recently went viral, and fans were stunned—he looks fantastic. Earlier this year, Van Dyke shared the secret to his longevity: exercise. For decades, he has kept a strict routine of working out three times a week. “Somebody asked what I attribute my condition to,” he told The Hollywood Reporter. “I said, ‘I’ve always exercised three days a week. Still do.’”

Friends say his workouts are filled with joy. He doesn’t just move from machine to machine—he dances between them. After the gym, he often swims laps before heading home for a nap. At 99, that discipline remains unchanged. Rick Springfield recently posted a photo with Van Dyke, describing him as “an awesome human being” and marveling at his vitality.

“I thought I was doing well at 76, but Dick got up from the chest press machine and did a little dance step before I left! Amazing!” Alongside staying fit, Van Dyke is preparing to release a new book, 100 Rules for Living to 100: An Optimist’s Guide to a Happy Life.

It will share his personal stories, reflections, and advice on finding joy at any age. As his milestone birthday approaches, Van Dyke proves that optimism, movement, and laughter might just be the real keys to a long life.