Our Team
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Kelly Greene - Group Fitness Instructor
Kelly has been teaching group fitness classes and personal training for over a decade. She has her Masters Degree in Exercise Physiology from Columbia University and has Certifications from the American Council on Exercise in Group Exercise, Personal Training, Sports Conditioning and Behavior Change. She also has her 200-Hour Yoga Teacher Training, TRX Training, Stages Cycling, Pound, Barre and a background in dance fitness.
When she’s not at HD you can usually find her on or near rocks – jumping off of them on her skis, avoiding them while guiding friends through whitewater, biking over them, or climbing to the tops of them.
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Donna Keeler
Donna is a Master Nutrition Therapist (MNT) and Yoga Instructor having completed the 500-HR RYT certification with over 30 years of experience in education, leadership, and client-centered transformation.
As the founder of Nutrition Plan For You, LLC, she has worked with clients across North America since 2015 to create personalized eating lifestyle strategies rooted in functional nutrition. By analyzing blood work, reviewing detailed food logs, and considering each client’s health history, lifestyle, and goals, she develops realistic and sustainable nutrition plans. Her approach bridges science with practical implementation by empowering clients to understand their bodies and make confident, informed choices.
In addition to her nutrition practice, she has been a student of yoga for many years. As a yoga teacher since 2021, she guides Vinyasa, Hot Blend, and Yin yoga weekly as well as XFormer-assisted stretching. Her teaching emphasizes balance, strength, flow, and recovery.
Before transitioning into full-time wellness work, Donna spent nearly 35 years with Hunter Douglas, Inc. in leadership roles spanning customer success, sales training, learning and development, retail marketing, and large-scale education delivery across North America. She developed and led training programs for audiences of 25-5000, implemented CRM systems, supported retailers, and built continuing education programs that drove engagement and performance.
Today, her passion lies in helping people feel better, increase mobility and strength, and live with greater clarity and energy.
Donna and her husband enjoy time in Broomfield and the mountains, they enjoy monthly travel, time with their grown children and grand child, as well as their two dogs.
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Naomi Landis - Group Fitness Instructor
Naomi, a former primate keeper for the St. Louis Zoo and graduate of Washington University in St. Louis, entered the world of fitness after having her son and finding the zoo hours impossible for their family dynamic. As an avid fitness fanatic, she knew her second career path would involve helping others celebrate their athleticism and health. In 2010 she was certified at as personal trainer through the World Instructor Training School, in 2011 as a spinning Instructor through Madd Dog Athletics, and eventually this segued into a power yoga apprenticeship and subsequent certifications under Baron Baptiste and CorePower Yoga, as well as group fitness certification through the American Counsel on Exercise. In addition to spinning and power yoga, Naomi has experience teaching scripted hot yoga, bootcamp, barre, battle ropes, and floor pilates. When she is not training clients in her private studios, you can find her at CorePower Yoga where she teaches 6 yoga sculpts and 2 advanced power yoga classes each week, or with her 13 year old son exploring Colorado after moving here in 2019.
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John Marosi - Group Fitness Instructor
John has been fascinated with operational fitness since early childhood, finding ways to transport his surfboard on a Huffy or skateboard to the beach in Southern California and still make good grades in school.
Having played varsity soccer and baseball in high school, John became hooked on the solo endurance sport of triathlon in the early years of the sport. Having completed over 250 career triathlons in multiple distance categories as an age-group amateur, John knows the value of well-balanced training including strength, mobility, nutrition and recovery.
After a tour in the Marines, John has actively enjoyed Colorado and the greater Southwest’s boundless hiking, climbing, kayaking, SUP, running, cycling and winter experiences. He has practiced and taught a wide range of fitness modalities for over 20 years, including CrossFit, kickboxing, yoga, jump rope, kettlebells, and HIIT. He brings his passion for movement into the group fitness environment by challenging every member to explore their practice with energy and tap into the power of the team.
He presents every person he works with the opportunity to not only recognize their capabilities and limitations, but to test both as much as possible in their pursuit of longevity.
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Amber Rice-Horvath - Zumba Instructor
Amber has been a group fitness instructor since 2009. She has a masters degree in applied clinical nutrition and will graduate with her doctorate degree in clinical nutrition in 2024. Previously a professional dancer, Amber has been a Zumba instructor for over 10 years and also teaches pound.
In her spare time, Amber enjoys hiking, traveling, and spending time with her 3 children. She is also an avid Denver Nuggets fan, so you may just catch her at a game.
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Debbie Asmus - Yoga Instructor
Debbie began college as a dance major and studied anatimy and physiology, and then after a dance injury she discovered Yoga. She loved the way it allowed her to use her body in a strong and graceful way but without the pain ballet was causing. From there she decided to move to Boulder to go to Massage Therapy school. As a 30 year practitioner of massage, Debbie’s knowledge of the body is extensive and she carries that into her yoga and barre teachings. She is what one calls an alignment geek but is working on recovering from that:) After ‘retiring” from an active massage practice, Debbie became a personal trainer in 2018 to allow her to continue to help people with their physical bodies but in all honesty it is the mental and emotional changes that occur from working the physical body that she enjoys more than anything. Her barre classes draw from the basics of ballet teachings but incorporate strength and balance as well. Her yoga classes vary from beginners to beyond but always with an emphasis on safety, form and function.
In her spare time you will find Debbie on the water, kayaking or paddle boarding or hiking in the local mountains with her husband and new puppy as the kids are grown!