Cornerstone Strength

 building a more durable, capable, confident you!

Active Living

Building strength makes doing life easier ~ at any age ~ whether you're carrying groceries, competing in sporting events, chasing kids, or exploring the world.

Athlete Training

Building strength creates faster, more powerful, more durable and injury-resistant athletes ~ all of which translates to better on-field performance.  

Nutrition Coaching

Building a solid nutritional plan helps support your goals in the gym and in life ~ PN1 Certified Nutrition Coaching makes it easy with small, manageable steps.


Cornerstone Strength uses the Starting Strength method of barbell training to build general strength ~ the foundation for endurance, speed, power, and balance in athletics and in an active life.  

Learn more about Starting Strength

The Starting Strength Method: A Video Introduction

This video and much more about Starting Strength can be found here.



About Rebecca

Rebecca Fishburne has been working in the fitness industry since 2008 as a group fitness instructor and personal trainer, certified through ACE in 2015.  For decades her passion was endurance sports, but in her forties, she discovered the benefits of barbell training.  By 2017, this lead to an internship at Fivex3 Training, a Starting Strength affiliate gym in Baltimore, and she earned her SSC credential in 2019.  She has competed and placed in USSF and USAPL meets and dabbled in the sport of Strongwoman. 

Currently she works at Fivex3 and in the Annapolis/Severna Park area helping individuals of all ages gain strength and confidence in their abilities.  She has experience working with middle school, high school and college athletes, business professionals, new mothers, senior citizens, military personnel, and individuals recovering from surgeries.  Whether you're new to strength training and in need of direction and motivation, a regular stuck on a plateau, or an experienced lifter looking for form checks and more effective programming, she can help. 


“I would recommend anyone of any age to seriously explore barbell training with Rebecca. The confidence gained from getting stronger cannot be understated, and Rebecca is the ideal person to help you begin your journey.”  ~ Mylan

“I approached Rebecca for help with a negative attitude about my increasing age and changing body. She listened well, smiled more, and set a program that showed me I am strong and capable. She has the knowledge, skills, and positive energy to get me to do the tough stuff. Working with Rebecca makes me stronger inside and out!” ~ Michelle


“Rebecca helped me push past what I thought I could do to what I am capable of. I didn't realize that I was limiting myself because I didn't think I could do it.” ~ Beth

"After a year of a fairly focused regimen I felt like I’d hit a plateau and wasn’t making any further gains in my training. I was lucky enough to get a session with Rebecca and she really took the time to evaluate where I was in my workouts, what I was hoping to gain from them and how to adjust them to better achieve the desired results. She helped me simplify my routine and gave me much needed pointers on how to better utilize my time spent in the gym. I look forward to relying on her expertise and insight at future sessions." ~ Rob


Contact Us

Contact me to learn more about how we can work together to help you reach your goals. 

Cornerstone Strength Maryland

301 Najoles Road, Millersville, Maryland 21108, United States (located inside Old Line CrossFit)

(240) 882-1114

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