I’m glad you’re here!
Hello! I’m Katie Armstrong a Registered Dietitian who specializes in performance nutrition and longevity for elite and aspiring athletes!
My passion for sports nutrition began as a collegiate track and cross-country athlete. Conflicting fueling advice and a lack of guidance taught me firsthand how nutrition can impact performance, recovery, and long-term health.
Through Grit Nutrition, I help athletes cut through the noise, build confidence in their fueling, and develop habits that support both their goals today and their future in sport and life. My approach combines evidence-based nutrition with practical strategies tailored to each athlete, because reaching your potential shouldn’t come at the expense of your health.
Performance With a Purpose.
I believe the best nutrition strategies do more than improve performance. They build a foundation for lifelong health.
My goal is to help athletes develop the knowledge, confidence, and skills to fuel their potential, adapt to the demands of their sport, and build habits that support them long after their playing days are over. Through personalized, evidence-based guidance, I aim to make nutrition practical, sustainable, and empowering at every stage of an athlete’s journey.
Experience & Credentials
Hands-on experience working directly with athletes as part of performance teams across the NBA, WNBA, and MLB. This experience informs my practical, athlete-centered approach to fueling, hydration, recovery, and performance.
PROFESSIONAL SPORTS EXPERIENCE
PROFESSIONAL CREDENTIALS
Registered since 2022
Pursuing Certified Specialist in Sports Dietetics (CSSD) certification
Registered Dietitian Nutritionist (RDN)
EDUCATION
Arizona State University | Sports Nutrition Emphasis
Graduate research focused on hydration and human performance.
Master of Science in Human Nutrition