Fit House Denver | Owner Dariusz F.

Dariusz Franczak 

Founder & Head Trainer

I moved to US as a 14 year old and have worked my ass off since I was 15. I loaded bags and pushed carts at grocery stores, did roofing jobs, siding jobs, loaded trucks for UPS, had a few office jobs (hated every one of them) and joined the Army straight out of high school. Shortly after I got out of the military, I got involved in the fitness industry.

Since moving to Denver four years ago, I worked for few amazing group fitness studios but knew I wanted to run my own business. And now, finally, I couldn’t be more excited and proud to share with you what we’ve built here at FIT HOUSE.

Abbey Roesner


Abbey is obsessed with movement. She is a former professional dancer with a degree from The Juilliard School, and danced professionally around the world. In the fitness industry since 2015, Abbey is a NASM certified personal trainer. Abbey was the former head trainer at FIT36 Highlands and former head coach at OrangeTheory Fitness in West Highlands Ranch.  

Currently, Abbey is back in school pursuing physical therapy. She also teaches barre at The Ballet Physique in Littleton, and appears on many of the studio’s virtual workouts via The Ballet Physique Streaming Studio. 


Lisa Short


Growing up in Northern Colorado, Lisa was always outside and active. She played sports, specifically volleyball, through high school and into college. After college Lisa was living in North Carolina and decided to start personal training. She enjoys the energy of group training to break up the time between classes and studying. She is finishing her Masters of Acupuncture this year and will be practicing next door at KB Wellness, where she is already a Fascial Stretch Therapist. Time for a hard workout and a smooth recovery!

Lauren Winnen

Yoga Instructor

Lauren grew up right here in Denver and naturally loves all things outdoors; in addition to her career as a water resources engineer, she is an avid mountain biker, skier, and backpacker. She found yoga over a decade ago as a complement to her active lifestyle and fell in love with the moving meditation and the empowerment that being able to do a pose for the first time brings. Since then yoga has provided a constant in her life – a source of community and healing both on and off the mat. In 2018 she completed her 200 hour yoga certification through Kindness Yoga. Lauren’s teaching features thoughtfully sequenced classes that are framed to inspire courage and cultivate strength, flexibility, and body awareness.

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With decades of combined experience, our staff’s sole focus is helping you reach your fitness goals safely and effectively.