ORLANDO, Fla.— Robert Jolly has developed quite the reputation at New Dimensions Wellness.

“His drive is next level — he doesn’t shy away from any challenge that I present him,” said trainer Gunner Daft.

Once the stretching is done, it is time for the first challenge of the day. An hour's worth of intense workouts, five days a week.

At 61-years-old, Jolly is working out and proving age is just a number, and his workouts constantly keep him on his toes.

“Biologically I do feel 21,” he said.

“I admire the variety of the movements — there is no one that’s the same," he said of the workouts. "There’s always a twist to it."

The workouts are tailored to not only getting him stronger, but also getting him back on the tennis courts competitively.

“I love these one-on-one sessions," Jolly said. "They are really helpful for my game."

Just a few years ago, that wasn’t the case. A reoccurring knee injury sidelined Jolly and doctors told him he’d never play tennis again.

“I never thought I would, to be honest with you," he said of playing. "You have to understand, my knee, it wasn’t only pain, but the inflammation was huge. I would look at my knee and be like, wow it’s like a balloon."

That’s when Jolly turned to physical therapy.

“After that improvements were amazing," he said. "I was back on the courts playing and that felt good."

Now it's a feeling he gets to enjoy roughly six times a week.

“Every night after New Dimensions, I’ll come out and get some tennis in,” said Jolly. “It feels awesome — I’m glad I can hang with even some of the younger people sometimes."

No matter the competition, Jolly always has a winning attitude.

“I am just really thankful and I try to maintain that attitude throughout the day,” he said.

He is living up to his reputation, and more importantly, his last name.

“There is no other way to be," said Jolly. "That’s what life is all about, having fun and absolutely, be jolly."