Our Coaches
When you join GAIN, our coaches become your support staff. We’re here to teach and provide understanding, create accountability and make sure you’re being challenged appropriately.
Justin Miner — Founder & Head Coach
I’ve been coaching for more than a decade, but my path wasn’t a straight line. In college, I trained like an athlete who thought he had it all figured out—until back pain and burnout forced me to start over. Rebuilding my body from the ground up taught me what truly works, and that process still shapes everything I do as a coach today.
In 2014, I opened GAIN Strength & Conditioning with one goal: help people build fitness that lasts. Not quick fixes or six-week gimmicks, but strength, mobility, and habits that stand the test of time. Around here we call it reasonable fitness—and while it’s sustainable, it’s never easy. My job is to help people do big things, whether that means lifting for the first time, moving pain-free, or training for an ultramarathon.
Outside the gym, I’ve finished all 48 White Mountain 4000-Footers, run more than 20 ultramarathons, and I’m always looking for the next challenge. At home, I do the cooking (ask me about my eggs), am always reading some sci-fi or fantasy, and I take my dog, Clementine, everywhere. Above all, I’m a husband and dad—Hannah and our kids, Elliot and Nolan, are the reason I stay strong, run fast, and play the long game.
Luke Freeman
Luke Freeman discovered strength training after finishing high school sports, turning what began as a casual pursuit into a long-term commitment to athleticism, performance, and health. While his competitive soccer and track career came to an end, his drive to stay strong, capable, and athletic only grew stronger.
Luke studied Neuroscience at the University of New Hampshire with a strong interest in human behavior and performance. During college, he began privately coaching clients while weighing two career paths: entering the medical device field or pursuing strength and conditioning full time. Ultimately, coaching won out.
Luke believes strength training is one of the most powerful tools for improving longevity, resilience, and quality of life. His coaching philosophy centers around helping people stay capable for the long run — building strength, conditioning, and confidence that carry over far beyond the gym.
Outside of coaching and training, Luke stays active through basketball and recreational sports. During the summer, you’ll often find him at the Mill Pond Courts putting in hours on the court if the sun is shining (come join him). He also enjoys podcasts, spending time with friends, and occasionally working on music production projects. No matter the hobby, training remains the foundation that keeps him grounded and energized.
our coaches are here to help you achieve your goals.
