A UK gym is hoping the “indulgence” trend will bring seniors together by putting fun back into fitness

London – If you’ve been struggling to stay active, there’s one trend a gym group hopes will make working out feel like playtime.

“Welcome to madness! Come in, come in!” coach Rachel Dennis said just like this when she greeted people entering the door of David Lloyd’s gym in Enfield, North London.

“We’re going to play ‘stuck in the mud,'” he announced. Screams and laughter quickly filled the room as the tagged players froze as statues until others crawled to their feet to “release” to run again.

A kid’s fitness class is all about channeling your inner kid, and the atmosphere is fun, even silly.

“How’s the heart rate? Feeling a little warm?” Dennis asked as the pace increased.

At David Lloyd Clubs in the UK, members can relive their teenage years with playground-style classes and PE class games – an attempt to take the “work” out of exercise.

Pran Varatharajan was delighted as he lifted the legs of his classmate, driving him in a wheelbarrow race.

The pace is fast, and the bullies quickly move on to the next game.

“Who remembers the parachute?” Dennis asked, holding up a large piece of colorful cloth. “If you drink, you’ll be…we’ll be bananas?” he said giving the groups.

The classes bring back dozens of childhood favorites – games that most people haven’t played since elementary school.

After running back and forth across the fabric, it was time for a quick round of “popcorn,” with the adults huffing and puffing to keep the colorful balls from bouncing off the parachute.

During a quick break, class member Sophie Doe told CBS News that her heart was racing. He really enjoyed the parachute, and said he hadn’t played any of the sports since he was seven or eight years old.

“It’s the joy of being a kid, like an adult,” Kielan Edwards, a personal trainer at David Lloyd Enfield, explained about the hacking routine, as he let a CBS News reporter try the “Joyride,” an exercise bike that was transformed to look like a Little Tikes Cozy Coupe.

“Many people find it very difficult to get used to exercise before it becomes a habit. But that’s because they forget the fun of it,” he said. “We’re trying to replicate those memories that you may have had as a kid here, in a more physical, gym-based environment.”

“What time is it, Mr. Wolf?” Dennis called his class.

“It’s time to eat!” they shouted again, running to the ground.

“I think it gives you a chance to remember, it gives you a chance to revisit that time in your life that you thought was gone and never coming back,” Varatharajan said.

Trainers say parenting works because being a child never gets old, and scientists seem to agree, with research showing that if exercise is fun, people tend to get used to it.

The US National Institutes of Health states that adults who engage in playful, child-like activities report better cognitive function and memory as they age.