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

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!

Jessica Reiss

Jessica Reiss is an amazing spin instructor with over 25 years of coaching experience.

Jessica Reiss, a 4-time Ironman competitor, is one of our amazing spin instructors. She also has over 25 years of experience coaching a wide variety of team and individual sports, including volleyball, racquetball, biking, swimming, and more. She was born an artist, and despite feeling deeply at home with her pencils and paints, she is also a rebel. At a young age she stretched well outside of her comfort zone to become a competitive volleyball player who cross trains with Ironman’s, beach style ping pong, racquetball, and pretty much everything with movement but wrestling, despite her youngest sons insistence that it’s worth it. A mother of 2 sons and three cats, Jessica may be a Boulder Native, but her soul is at the sea. She has been stung by a stingray, and her superpowers are going to kick in any day now, she can feel it. Perhaps once describes as slightly shy, Jessica has made serious efforts to instead be defined by her immense creativity and non-stop effort towards the things she is passionate about. She would say the music she listens to, and brings to her classes, is incredibly important to her. You can catch her listening to everything from: Goth, EBM, Synth Pop, Brazilian, Blues and Afro-Punk Beats. She loves chips and guac. She loves wearing dresses with her Doc Martins. Most importantly however, she loves she loves kicking ass in high heels and cycling shoes alike. Come take one of Jessica’s high intensity and incredible classes today!

Massage Therapist

Kristin Kelly

Former bodybuilder Kristin Kelly has been practicing sports and orthopedic massage for over 20 years.

Investigating and implementing avenues to positively impact the human body has been Kristin's life-long passion, both personally and professionally. She has been working in the field of health and fitness for over 30 years.

As an athletic teenager, Kristin was inspired by an episode of Highway to Heaven about how a dedicated physical therapist enabled an injured competitive athlete to overcome his debilitating physical and emotional traumas. She knew that was the gift she wanted to give to others. While still in high school Kristin volunteered as a physical therapy aid, began training competitively in bodybuilding, and got her first certification in personal training.

Kristin graduated from the University of Massachusetts with a Bachelor of Science Degree in Exercise Physiology and a minor in Psychology and moved to Boulder where she continued her career in personal training while attending the Boulder College of Massage Therapy. For over 20 years, Kristin has been combining her sports and orthopedic massage skills with her exercise physiology background to help her clients achieve their physical wellness goals.

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