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Meet the B-FIT Team

The B-FIT team is here to help you meet and surpass your fitness goals.

We’ll get you motivated and inspired with one-on-one training and group classes. The B-FIT team want you to have fun, meet new people, and enjoy an active lifestyle. Everyone is welcome here.

Our talented trainers and coaches offer personal training and unique classes like Squats & Watts, Spinsanity Sprints, Wall ‘n Weights, and more. Check out our class schedule and meet our amazing team today!

Queen Bee

Brenda Maller

Brenda Maller is B-FIT's fearless (and we mean fearless!) leader.

Brenda Maller has been a personal trainer for the past 30 years, and there are few as skilled in the game as she is. Brenda is unique in both her education and focus. Possessing a dual Bachelors of Science in Sports Medicine and Occupational Safety from Keene State College, as well as earning her Masters of Science in Kinesiology at University of Colorado in 1995. This degree, and her focus on active lifestyle, are what originally brought her to CO, where she has been ever since.

After racking up a number of bodybuilding titles, as well as a big screen debut, she was able to turn her attention outwards. Brenda has had a deep love of helping people reach their fullest potential. From Olympic hopefuls, all the way through her oldest clients who are well into their 80s, Brenda has the knowledge and attitude to get people where they are going, no matter where they came from. Long subject to the trials and tribulations of conventional gym, Brenda is bound by them no more! In her own hive at last, she is known for her fun, energetic, challenging classes and her belief in everyone, no matter what.

Deirdre Mangine Spin class instructor BFit Boulder

Deirdre Mangine

As one of B-FIT's awesome spin instructors, Deirdre Mangine is one of the most badass people we have on staff.

Dierdre grew up with a longtime focus on athletics and sports of all varieties, so it should be no surprise she threw her lot in with B-FIT. She started taking aerobics classes with her mom at 14, neon wool leg warmers and all, and it’s only been uphill from there. With that in mind, it is no surprise she got hooked on group fitness as a teenager. That love, combined with a passion for any sort of outdoor athletics, has helped D foster a lifelong and meaningful relationship with exercise.

Deirdre took her first spin class in LA with Johnny G, and it was meant to be, because she has never looked back. She loves the intense cardio that spinning brings, and cycling has become her go-to exercise, both indoors and out. When not at the gym, D works running multiple retail stores and plots her path to world domination! She started teaching Spin in LA in 2000, and hasn’t stopped. Her style has evolved, but she has always believed that the music is as important as the routine. So come check out what makes D so awesome today!

Bridget DiMartini

Our weekend warrior, Bridget DiMartini, is one of our awesome personal trainers and wall instructors.

Bridget is an amazing personal trainer and wall instructor. After being born in and raised in Nigeria, she attended the National Academy of Sports Medicine in 2016, and has also received certifications in personal training and specialization in Corrective Exercise. When not training or teaching, you can find her being a mom to her son Silas, gardening or spending time outdoors. She would say her mission is to inspire people into having lifelong and meaningful relationships with Fitness, and to do that, one must first inspire people into turning fitness into a habit as part of a healthy lifestyle. There is a quote by Aristotle that reads, “We are what we repeatedly do, excellence, then is not an act, it is a habit.” With her understanding of the science of the human movement system, Bridget is an expert in creating easy-to-follow programs that can be customized to the individual with realistic, attainable fitness metrics. She also specializes in HIIT, Strength/Weight/Core Training, Corrective Exercise Techniques and Injury Prevention and Recovery (SMR). So come in to the gym and see all that makes Bridget the incredible trainer she is today!