Hi! I'm Kearstin

Kearstin grew up with fitness around her from an early age, her mother was one of the five founding Jazzercise instructors, and brought Jazzercise to Los Angeles when Kearstin was five. Kearstin was right by her mother's side as she grew the Los Angeles territory. Kearstin continued her fitness journey through high school, where she was a swimmer, cheerleader, and an equestrian. When it was time for college Kearstin chose fashion, and attended Los Angeles Trade-Tech. At the age of eighteen, she started her twenty-five plus year career in fashion, designing for such companies as Paige Denim, Earnest Sewn, Elizabeth and James, Hudson, and Re/Done. It wasn't until the birth of her second child thirteen years ago that she found her way back to fitness wandering into a spin class at Equinox, and that was it she was hooked. Shortly after that, she became a Schwinn Certified instructor. Four years ago, Kearstin opened GEARFitness in Albuquerque, NM. A boutique studio offering a variety of group fitness classes including Barre, Pilates, HIIT, Yoga, and Cycling. In 2018, she joined Defined Fitness as a yoga and cycling instructor. Kearstin was also the Instructor Development Coordinator. She helped to expand their cycling   program, introducing and developing a rhythm-based cycling class. Kearstin has returned home to Los Angeles and is excited to start in-person classes after a long year and a half of teaching online. Kearstin brings her unique no-nonsense attitude that made her so successful in the fashion industry  into all her fitness classes. She loves motivating people to bring out their best selves. Kearstin believes that the energy and emotion created when working out provides the power needed to change your life!

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Kearstin is my all the time MOOD. She is the type of instructor you get out of bed for bed for and makes you glad you showed up. Every.single.time. Her music is the best and love her fun yet no nonsense attitude on the bike…One thing is for sure- she pushes me to limits I didn’t know I had! Show up for her- you’ll never regret it!


Kearstin pushes me to be more fit! Her music is motivating and fire! I look forward to each and every class.

I so enjoy Kearstin’s spin and yoga classes. She brings such a unique energy and expertise to the fitness world. As one of the founding members of Jazzercise, I so enjoy her choice of music, high energy, and vivacious personality. From a yoga perspective, she offers her own sense of calm and spirituality. Her light and aurora shines ever so brightly.

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