Be Stronger Than Your Excuses

We are committed to helping you empower yourself through educational health, fitness and nutritional discipline.

Be Stronger Than Your Excuses

We are committed to helping you empower yourself through educational health and nutritional discipline.

Your Top Choice for Fitness Training and Therapy Programs

Oxygen Fitness 03 provides customized fitness training, health and nutritional coaching, as well as ozone therapy. Our offices are located in Bayfield and Durango, along the southwest corner of Colorado in the Rocky Mountains.

Training Services:

  • Private 1 on 1 custom training for your needs
  • 2-3 adult group trainings
  • Aging adult fitness assistance
  • Kids’ warrior fitness training
  • Private fitness travel with clients
  • In-home sessions available in surrounding area

About Our Goal

We are committed to helping our clients live with more joy, strength, and vitality. At Oxygen Fitness 03, we believe that the more we help ourselves, the more we can help others! Our goal is to provide you with excellent health and wellness solutions.

About Me

bio pic

Renelle Stewart is a resident fitness instructor and owner of Oxygenfitness03 in Durango Co. She is certified in AFAA/NASM fitness and is also a certified Ozone Therapist. Her mission is to empower her clients in their personal journey for overall core strength, nutritional education and discipline. Her goal is to bring adventure, fun and education into the mundane fitness routines. She not only enjoys teaching in her private studios, but also likes to take those sessions outdoors. These training sessions can include wilderness hikes and trail runs, snowboarding lessons and cross-country skiing.

After a long career as a professional glass artist and avid athlete, it's been a pleasure to work with others and share her expertise.

studio kickbag

What Makes Us Special

What Makes Us Special

Tailored Experience

We focus on providing a more personable, custom-tailored experience than traditional fitness centers. This can include a combination of wellness coaching, training, post rehab, nutrition, and detox. We are a customer-style boutique fitness studio, we offer a combination of wellness and spiritual counseling wile renewing your core strengths.

Innovative Therapy

Complementary to fitness training, we offer innovative ozone therapy treatments. Many of our clients use our ozone sauna for post cancer treatments, autoimmune disorders, athletic recovery, and heavy metal detoxification.

Holistic Approach

We want to help you improve your physical, mental, emotional, and spiritual health. This is accomplished during the time we spend together in our studio. We work diligently to educate our clients on anatomy, posture and how to incorporate the teachings into their own workout.



It is an honor to have the opportunity to help our clients succeed. Our definition of success covers many levels, but perhaps the most meaningful is having a smooth, easily flowing life. Each of our clients is unique in that they appreciate a broad-based, customized approach to support their personal growth and exploration. We sincerely appreciate your support and are looking forward to helping you align with your best self!


We offer a range of options for you to improve your health, reach your personal goals, and achieve a level of fitness that you feel serves you in all aspects of your life.

At Oxygen Fitness 03, we are privileged to have four beautiful seasons. In the summer, a workout may be an outdoor circuit along the river. This includes trail running or walking and boot camp style workouts. In the winter, we also offer training outside of our studio. This include private snowboarding lessons, snowshoeing, and cross-country skiing.

The nutritional aspect of holistic training we provide focuses on guiding clients in dietary refinement. This may include eating for their specific blood type or metabolic type, or even adhering to a gluten-free diet.

The personal training programs that we offer includes cardio kickboxing and circuit training. These programs target an individual’s strength and endurance, as well as balance and flexibility.


The Recipe for a Healthier Lifestyle

At Oxygen Fitness 03, we love the energy of the Animas River, which is right outside our studio, and the energy of our clients. We believe the combination of these is a recipe for promoting healthy lifestyle habits and optimal health.

Ozone Sauna

We provide a steam sauna and ozone therapy. Both are important parts of any detoxification program.

Sauna office

How It Works

You sit inside with your head outside of a steam sauna that has oxygenated air pumped into it. The sauna allows the steam to surround your body so that ozone permeates the skin. Research into ozone therapy suggests that it helps the body fight pathogenic bacteria and fungi, as well as viruses. Additionally, ozone has been shown to stimulate oxygen metabolism and stimulate the Krebs cycle.

However, safety is important. Ozone and fatty acids react in cell membranes to produce peroxides. This means more oxygen is released from hemoglobin, so healthy elimination mechanisms are necessary. The sauna works by using the hot steam to open the body’s pores, which increases the exchange potential between ambient gases and the body.

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  • Relaxes and loosens muscles by reducing the buildup of lactic acid and increasing muscle flexibility
  • Oxidizes toxins so they can be eliminated through the skin, lungs, kidneys, and colon
  • Boosts blood circulation, helping injured muscles to repair quicker
  • Helps circulate vasodilatation of peripheral blood vessels, which relieves pain and speeds the healing process
  • Eliminates bacterial and viral infections of all kinds
  • Speeds up the metabolic processes of the inner organs and endocrine glands, resulting in a loss of 200 to 450 calories in a 30-minute session

Ozone Therapy as a Treatment

  • Arthritis
  • Blood Circulation
  • Detoxification
  • Elimination of Toxins
  • Heavy Metal Toxicity
  • Immune System Deficiencies
  • Increasing Body Metabolism
  • Pain Management
  • Stress and Muscle Tension

Words From a Wise Man

“The fundamental cause of all degenerative disease is hypoxia—oxygen starvation at the cellular level. Cancer and other degenerative disease cannot survive in an oxygen-rich environment.”

– Otto Warburg, Two-Time Nobel Prize Winner for Medicine (1931 and 1944)

Connect With Us

Get in touch with our team for more details about the fitness training and therapy programs that we offer. We look forward to hearing from you!