Dina Griffin
MS, RDN, CSSD, CISSN, METS II
Owner & Founder, Chief Fueling Officer
I’m Dina, a Board Certified Sports Dietitian, Registered Dietitian Nutritionist, and an "adult onset" endurance athlete. I work with active adults ages 40-75 and endurance athletes who want nutrition that supports performance, resilience, and long-term health, without extremes or gimmicks.
My path to sports nutrition wasn’t linear. I began my career as a software consultant, drawn to analytical problem-solving but wanting work that felt more meaningful.
That shift came through lived experience: seeing how nutrition supported my dad’s quality of life during terminal cancer, and learning firsthand how improper fueling can derail a race goal.Â
Those experiences sparked a deep curiosity about how the body responds to stress, training, and nutrition. IÂ later went on to earn my Master of Science degree in Food Science and Human Nutrition from Colorado State University and specialize in sports nutrition.
Eventually, I built The Nutrition Mechanic to do the work I care most about: helping active and athletic people fuel in a way that is life-changing AND provides durability for the long haul.
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Many of my clients are consistent, motivated, and already doing a lot “right.” What they’re missing isn’t effort, it’s clarity. They want to know how to fuel their body, at this stage of life, for the training and goals they actually have.
My work focuses on:
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Practical daily nutrition that supports training, recovery, and longevity with an emphasis on women’s health
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Endurance fueling strategies that reduce guesswork and GI issues while supporting performance goals
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Navigating aging, changing physiology, or health conditions while staying active
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Using targeted testing data to guide informed decisions and set a plan in motion for success
The process is collaborative, realistic, and grounded in real life. Nutrition should support your training and your life, not feel like a second job. And yes, we usually have some fun along the way.
If you’re an active adult or endurance athlete who wants clear, individualized nutrition guidance that evolves with you, you’re in the right place.
WALKING THE TALK
I don’t just coach endurance athletes, I live the process myself. I’ve competed in marathons, ultrarunning events, triathlons, and cycling events, and I’ve supported athletes behind the scenes at some of the toughest endurance events in the world. These experiences help shape how I approach fueling, recovery, and long-term performance.
I understand the demands of training, the mental load of chasing goals, and the challenge of balancing sport with the rest of life. That perspective matters even more as bodies, priorities, and recovery needs change over time.
I work with athletes across a wide range of abilities, from newbies to recreational to professional. Some recent athletes I’ve supported include:
- Megan Eckert, elite ultrarunner
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Syd & Macky, professional mountain bikers
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Kevin Goldberg, multiple 200+ mile finisher
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Anna Strehlow, professional triathlete
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Don Reichelt, elite ultrarunner
I’m the co-host of the Inside Sports Nutrition podcast with colleague Bob Seebohar, where we explore sports nutrition topics through an evidence-informed yet “real life” lens.
I’ve also contributed to podcasts, webinars, conferences, and publications focused on endurance sport, fueling, and menopause health. At the core of all of this work is the same goal: helping active people cut through noise, understand their unique needs better, and create nutrition frameworks they can actually sustain.
Rebecca Rick
MS, RDN, CD
Becca has a Master of Science degree in Sports Nutrition from the University of Utah and is a Registered Dietitian Nutritionist and Certified Intuitive Eating Counselor. She has experience working with all levels of athletes - ranging from first-time ultra-seekers to Olympic individuals and teams, most notably with US Ski and Snowboard Association and US Speedskating.
As an ultrarunner herself, her biggest passion in performance nutrition is working with mountain endurance athletes. She recognizes that nutrition is a key pillar of optimal performance, but that laying a strong foundation for daily nutrition and lifestyle habits surrounding training is paramount for health and longevity in any sport. She aims to help her clients experience food working for and not against them, whether giving them the energy to bring their best selves to each day or fueling a training session or race.
Read more about Becca's professional background, her athletic accomplishments, other personal fun facts, and her approach to working with clients.
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While Dina loves being nerdy, her first career as a software consultant didn't provide the fulfillment she was seeking in life.
The fire was ultimately lit to change careers to the field of nutrition after two separate but very important life events happened: seeing the power of improved daily nutrition patterns in extending her Dad's terminal cancer prognosis and her suffering a huge gut bomb during one of her early marathons that ruined her first try at a Boston Marathon qualifying time (she got it later though!).
Her fascination with the human body and the interplays of nutrition led to her pursuing a Master of Science degree in Food Science and Human Nutrition from Colorado State University and delving into sports nutrition.
Since then, Dina has worked as a Registered Dietitian and Board Certified Specialist in Sports Dietetics in the clinical, outpatient, and private practice settings. But she finally found her true calling as the Nutrition Mechanic!
Catch Dina as podcast co-host:Â Launched in December 2021 with Sport Dietitian colleague, Bob Seebohar, tune into the "Inside Sports Nutrition" podcast to hear a variety of discussions and interviews on all things sports nutrition.