At KneticRx, we believe performance begins with purpose, and few embody that belief more than Markeith Day, our Performance Specialist Coach. With over ten years of experience in fitness and sports performance, Markeith brings structure, intention, and leadership to every session. His expertise in functional strength, mobility, and athlete development allows clients to move better, perform stronger, and grow with confidence both inside and outside the gym.

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​Markeith holds a Bachelor of Exercise Science and is certified through NESTA as a Certified Personal Trainer, Certified Functional Strength Coach, and Certified Performance Preparation Specialist. His experience spans from professional athletic preparation to grassroots development. As part of the 4th and Inches NFL Combine Prep program, he coached athletes in speed, movement mechanics, and physical readiness, helping competitors rise to the highest level of performance.

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Markeith’s coaching philosophy is rooted in people first, athletes second. He believes that every great transformation starts from within, combining movement science with mental growth and accountability. His ability to stay calm under pressure, paired with a focused and intentional presence, helps clients unlock confidence and capability that extend far beyond training.

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Outside the gym, Markeith leads with the same commitment to excellence as a husband, father, and mentor. He often shares workouts with his two young daughters, showing that performance, parenting, and purpose can coexist. His dedication to consistency and growth is what makes him a cornerstone of the KneticRx environment.

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At KneticRx, Markeith represents everything our culture stands for. He leads with presence, precision, and care, setting the standard for what it means to coach with excellence. His clients describe him as intentional, calm, and deeply motivating, a professional who turns every session into an opportunity for progress and long-term impact.

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Connect with Markeith on Instagram @Koachedbykeith for inspiration and insight into what intentional training truly looks like.