On Your Mark Nutrition
OYMN_ICON_Teal Icon with Pattern.png


Untitled design-3.png

On Your Mark Nutrition

On Your Mark Nutrition, LLC (OYMN) is located in Miami Beach, Florida, and is an Applied Sports Nutrition Science practice that combines physiology and nutrition for health and performance. On Your Mark Nutrition transcends the ‘shotgun’ sports nutrition dogma of ‘one-size-fits-all’ model. Many people focus on optimizing the here and now, but not on the athlete’s health, especially post-sports career. For professional and Olympic athletes, OYMN’s services begin when the athlete meets their team’s limitations in the provision of nutritional care.

OYMN is the solution to ensure athletes are fit and healthy by bridging the gap between traditional and generic sports nutrition practices by focusing on nutrition based on an individual's physiology. OYMN offers testing services to enhance an athlete's nutritional programming using high-end technology.


The COSMED K5 - Physiological profiling in the trenches


Coming December 2019

The physiological testing helps identify efficiencies and inefficiencies in the athlete that results in a stronger profiling of the athlete. With this, OYMN is partnered with Dr. Lorenzo Gonzalez to bring together a nutrition-first and function-first approach. Lorenzo is a Doctor of Physical Therapy, Licensed Acupuncturist, Board Certified Orthopedic Clinical Specialist and Board Certified Exercise Physiologist who specializes in treating Olympic, professional and recreational athletes in Miami, Dallas and NYC. Lorenzo was the Team USA Fencing physical therapist in 2008 and continues to treat many of them privately. Lorenzo brings expertise to OYMN in physical therapy and biomechanics to enhance the efficiency of the nutritional programming and overall health of the athlete. This sports performance enhancement team is a combination of nutrition, physical therapy and biomechanics that provides an unmatched, high quality service for those seeking a holistic approach to performance enhancement and high quality care.

I hired On Your Mark Nutrition to handle the heavy lifting regarding nutrition of two major sports performance projects and was more than pleased. After those two projects I made it a priority to work with Katie Mark on anything that requires applied and cutting edge nutrition science to find a winning edge. Work with her, as the results speak for themselves.
— Carl Valle, Performance Analyst and Track & Field Coach from High School to the Olympic Level in Sprints & Hurdles

Individualized nutrition plays a bigger role the more competitive the athlete. It’s about attention to detail and marginal gains. But all athletes can experience a benefit. Everyone can benefit - from an Olympic athlete to the Weekend Warrior and anyone who aspires to be fit and values health.

Personalized nutrition for your goals is a lifestyle - not a diet. Nutrition builds age-defying athletes to push their career - and success - in their sport, health and longevity.

performance nutrition

Fitness, health & wellness

sports nutrition concierge

About Katie Mark

On Your Mark Nutrition, LLC is owned by sport performance nutritionist/dietitian and competitive athlete, Katie Mark, MS, MPH, RD, LD/N, CISSN, USAC, METS.

Katie is a Registered Dietitian who lives in Miami, Florida, and works as a sport performance dietitian-nutritionist; a consultant to coaches, teams and trainers; an R&D consultant; and a writer. Katie works with all types of athletes - Olympic and professional athletes - including one of the greatest athletes of all time - collegiate and recreational athletes as well as fitness/health enthusiasts.

She is skilled in investigating nutrition science research and applying the science in the real world, which includes 12 Olympic medals from Rio 2016. Her nutritional philosophy helps athletes achieve living fit and healthy by using personalized nutrition that targets training adaptations and health. She focuses on individualized nutrition through Nutrition Periodization™, Metabolic Efficiency Training™, safe and effective supplementation, and exercise physiology.

Head Shot 2.JPG



featured in vogue magazine as A next generation nutritionist

Vogue Magazine

November 2018

Forget calorie counting. Next-gen nutritionists are using biometric analysis for a data-backed approach to well-being.

If you’re not testing, you’re guessing
— Katie Mark, a sports dietitian who rejects the analog mentality of simply eating well and exercising

I’ve had the pleasure of corresponding with Katie regarding many aspects of Sports Performance Nutrition. Katie is a forward thinker, extremely knowledgeable, and a rising star in the world of Nutrition. Katie has the ability to incorporate science-driven methodologies into actionable practices for athletes, resulting in many tremendous individual success stories. Having worked with several RDs in the past, I can say that Katie is among the best and brightest in the business. No matter your goals, Katie is an outstanding resource who can help you elevate your results.
— Alan Bishop, Men's Basketball Director of Sport Performance at the University of Houston


Specializations Chart.png


'Test. Don't Guess.' Athlete-specific advice - not general advice - is provided. Interaction with actionable data is key to a personalized nutritional plan. Running diagnostics using OYMN’s technology can tell you more of what's happening inside the body in response to your nutrition and exercise - not body weight, body composition or performance success. This helps better equips athletes with a nutritional profile to track and manage real changes that translate to lower injury/illness rates and to enhanced performance and health.


Here are 30+ blogs and articles containing FREE science-backed nutrition information.



Name *