Meet the CrossFit Coaches

Passionate Coaches

CrossFit Shady Grove simply has the best, most exciting group of coaches in Gaithersburg! They’re not only incredibly talented and experienced, these folks are also a blast to hang out with. If you’re ready to break and sweat and crack a smile (or a big belly laugh), come on it and WOD with us!

  • Justin McCary

    Co-Owner and Head Coach

    Co-Owner and Head Coach Justin McCary is an absolute Batman fanatic. He’s been collecting Batman memorabilia for years and even creates sculptures like masks and props. “Halloween is the best holiday ever,” he says.

    The enthusiasm Justin has for the Caped Crusader is nothing compared to the passion he has for his coaching clients. “It’s absolutely incredible seeing others get excited about hitting a PR, or getting their first pull-up or muscle-up,” he says. “It’s infectious, and motivating for me as a coach, and only drives me to better myself both as a coach and an athlete.



    • CrossFit Level 1 Trainer
    • NASM-PES
    • FMS-1
    • USAW-Sports Performance Coach
    • CrossFit - Movement & Mobility
  • Lindsay Warnes Harbison

    Co-Owner and General Manager

    Co-Owner and General Manager Lindsay Warnes Harbison has been playing sports all her life, and CrossFit was a natural progression of her competitive spirit as an adult. When she first started coaching six years ago, she says she was afraid to speak in front of her peers, “But once I got comfortable, I really started enjoying it.”

    When she’s not at the gym, you’ll find Lindsay running her estate planning law practice. Her favorite quote is from Henry Rollins: “The Iron never lies to you … It never freaks out on me, never runs. Friends may come and go. But 200 pounds is always 200 pounds.”



    • CrossFit Level 1 Trainer
    • CrossFit Movement & Mobility
    • Brand X Method Basic Kids Course
    • Crossroads Adaptive Coaches Certificate
  • Lauren McCary

    Assistant Manager and Coach

    Assistant Manager and Coach Lauren McCary first tried CrossFit in 2014 at the urging of her friends. “I fell immediately in love with everything about it,” she says. Since then she has enjoyed the many benefits of strength training, and working with a barbell. She loves weightlifting, and helping others reap the benefits of barbell training!

    Lauren wants to share her love of fitness with as many people as possible. “Helping people live a healthier, more fulfilled life is the best job there is,” she says. Lauren first joined the CrossFit Shady Grove team as Assistant Manager in 2015, then went on to become a CrossFit Level 1 Trainer in 2017.


    • CrossFit Level 1 Trainer
  • Garrett Bergman


    Coach Garrett Bergman has always wanted to help people achieve their full potential. After watching the CrossFit Games on TV in 2012, he knew he wanted to trade in his usual bodybuilding regimen for CrossFit. “After I went through my basics course and jumped into my 1st class, I was hooked and never looked back,” he says.

    Garrett’s interesting background in acting, playing baseball and his collegiate ice hockey career at the University of Maryland are always topics of conversation around the gym. Today, Garrett is passionate about helping his members reach their goals, and he specializes in muscle gain, fat loss and endurance.



    • CrossFit Level 1 Trainer
    • CPR/AED
    • TRX: Individual and Group
    • Kettlebell
  • Matt Harbison


    Coach Matt Harbison started CrossFit as part of his full-time job in law enforcement. “We utilize it almost daily in our training,” he says.

    Matt specializes in defensive tactics, and he’s passionate about Brazilian Jiu Jitsu and mixed martial arts. He has “a handful of medals that sit in a box in my basement” from his wrestling and Jiu Jitsu competitions and is focused on only getting better with age.


    • CrossFit Level 1 Trainer
  • Jason Barnette


    Coach Jason Barnette was immediately drawn to CrossFit because of his background in sports growing up. He joined his first CrossFit box when he was living in the Netherlands in 2012. The CrossFit methodology and results he saw convinced Jason that CrossFit was the perfect fit for him. Jason continued his CrossFit journey, and went on to become a Coach in Orlando, Florida. Jason loves coaching because he can share his passion for fitness with others.

    In May of 2017, Jason relocated to Maryland for work and says, “I immediately knew I wanted to coach with the  amazing group of people at CrossFit Shady Grove.  The coaching values and athlete community are directly aligned with what I feel CrossFit stands for.”


    • CrossFit Level 1 Trainer
  • Angela Cowart


    Coach Angela Cowart started her Crossfit journey in 2009 as a challenge by her husband. She grew up playing volleyball but never learned to truly challenge herself athletically until discovering Crossfit. She has a unique perspective, having developed as an athlete through many challenges, including being overweight, pregnancy and now as a mother of three. She has a true passion and excitement for helping others grow and develop while she helps them to reach their personal fitness goals, regardless of their current fitness level.

    When outside of the gym, Angela is passionate about her children and stays active as a musician in the community.


    • CrossFit Level 1 Trainer
  • Sara Olsen


    Coach Sara Olsen started CrossFit in 2007 as a way to strengthen the muscles around an injured knee and stave off surgery for a few years. She has since immersed herself in all forms of functional fitness as a coach and advocate for people with adaptive needs.

    Sara is currently working on her PhD where she will focus her studies on the psychosocial impact of community-based fitness for adaptive populations…in other words how does being active with friends help us all #getbetteratlife and learn to #adaptlife?


    • CrossFit Level 1 Trainer
    • MPH-Physical Activity
    • Crossroads Adaptive Coaches Lead Seminar Coach
    • USAW Sports Performance Coach
    • CrossFit Mobility Certificate
    • CrossFit Endurance Certificate


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