NASHVILLE, Tenn. — For Jamie Warren, Iron Tribe Fitness keeps the word tribe at the center.

What started as a personal passion for group workouts has grown into a thriving Nashville franchise, with four locations under his belt: Franklin, Belmont, Brentwood, and Belle Meade. Built on intentionality, relationships, and real results, Iron Tribe isn’t just about fitness, it’s about creating a community where members, especially those in an older demographic, thrive, challenge themselves, and feel truly seen.

“You want to see anybody that’s set up for success, and you know it’s going to start with how they steward their body,” Warren said.

This type of mission was born out of Warren’s own personal journey with fitness, and he sees a little piece of himself with every member who walks into his gyms.

“I get the most excited about when people come to us for the first time,” he shared. “Even if they’ve never worked out before, even if they’re starting at my age. I’m just so glad that they’re here because that tells me that you’re making proactive steps to change the course of your future.”

But how did he go from Iron Tribe member to Iron Tribe gym owner?

Warren’s friend, Forrest, invited him to join a clean water ministry called Neverthirst, which brings clean water to remote villages and supports community development. “I was there to help support Neverthirst through fundraising,” Warren said. But one morning in a hotel hallway, he noticed Forrest doing jump rope exercises and immediately felt drawn to his workout. “The workout just completely destroyed me,” he admitted. “But it was something that I felt challenged by, and I wanted to go back and I got hooked.”

When the first Iron Tribe location opened in 2010, Warren and his wife became founding members. “I loved it and got hooked. We were working out together and living a similar lifestyle. There was this new identity around working out together. I felt like I was on a team again,” he said.

Soon, Warren’s involvement grew beyond membership. By 2014, he bought out the first franchisee group, that also had some Nashville locations, eventually buying out the corporate stores and the franchise business in 2025.

and his partners became the second franchisees, opening their first location in Belle Meade. He also ended up buying the entire first franchise locations and has more Iron Tribe locations beyond Middle Tennessee under his belt.

Iron Tribe’s members reflects Warren’s own evolution into the gym. “If you look at all of our demographics, our average age is 44,” he said. “More than 50 percent of our client base, brand-wide, is above the age of 40. Warren and his staff are doubling down on helping members over 40 not just work out, but turn every gym session into fuel for a vibrant, active life outside of the gym.

“We cap our client rosters at 300 people. because that model doesn’t support the kind of experience we want to deliver,” Warren explained. This allows for intentional coaching relationships, semi-private training sessions, and a sense of belonging that Warren considers the cornerstone of the brand. “Our tribes are stronger together,” he shared.

Warren wants everyone to find meaningful relationships at the gym whether with each other or with Iron Tribe trainers. “You’re going to feel seen, known and loved,” Warren said. “Your coach is going to know you, your body, your family, your kid’s names, what you do for a living and what you’re trying to accomplish.”

Warren also spends his time leading by example. He attributes his own success in health, fitness, and entrepreneurship to intentional self-care.

“I get seven hours of sleep every night. It’s non-negotiable. I drink at least half my body weight in ounces of water every day. I have a whole foods, clean diet that’s very high in protein. And I work out at least four days a week,” he said.

This dedication allows him to juggle the demands of running 8 locations, parenting three sons and maintaining his own active lifestyle.

In result, he has also learned how to combine his demanding lifestyle.

All of his sons are active, including his son, Jonathan, who has down syndrome and autism. Warren said ever since he became a gym owner, he can go to the gym whenever he wants and both him and Jonathan have made a weekend routine out of it. “We always go out for pancakes afterwards. He earns the pancakes,” Warren laughed.

Iron Tribe’s training philosophy has also evolved over the years. While the brand started as a CrossFit affiliate, Warren emphasized that today, the focus is on longevity, community, and health. “It’s about community and health for the long haul, especially for our core client,” he said. “It’s really more about that than this ultra-competitive gym that is pushing you to the max all the time.”

The gym’s programming is designed to ensure every member feels part of the tribe. “We have group classes where everyone’s doing the same program, modified or scaled based on their fitness history. Or our semi-private personal training sessions, where instead of 15 people in a class, you might have only five,” Warren explained. “It’s really about the kind of experience that either of them want. But in either place, you’re going to feel seen and known.”

“Iron Tribe members also enjoy brand-wide access, allowing them to work out at any location nationwide. From Tennessee to Alabama to South Carolina, you will always be able to get plugged in to your nearest Iron Tribe. “It feels like home,” Warren said.

For Warren, the message is clear: fitness is not a luxury—it’s a necessity. “Some people consider it a luxury. Some people consider it ‘if and when I have time.’ But it is a necessity, and you really should treat it like that, because your body will thank you later for it,” he said.

With Iron Tribe Fitness, Warren has created a model that combines coaching, community, and careful attention to client needs—a place where members not only gain strength but also a sense of belonging and purpose. “It’s way more than a gym. It’s a system for people to maximize and get the most out of the rest of their lives,” he said.

Warren is ready to help you or someone you know take that first step. In his words: “Your body will let you know later if you haven’t done that.”

Visit their website to find a location near you and get plugged in with a tribe for life. 

Author: Tala Shatara