My name is Josiah Campbell, though most people know me as “BO.” I was born and raised in Oklahoma City, Oklahoma. I attended Redlands Community College before transferring to St. Gregory’s University, where I played both basketball and baseball while earning my Bachelor’s Degree in Finance.

My journey into personal training was unexpected. During a break from basketball, while preparing to return to the court and pursue a professional basketball career overseas, a friend encouraged me to explore personal training. What initially began as a way to stay busy during the offseason quickly developed into something much more meaningful. I discovered a genuine passion for helping people improve their health, fitness, confidence, and overall quality of life.

Drawing from my experience as a collegiate athlete and the knowledge I gained through years of training in the weight room, I committed myself to becoming a student of fitness. I conducted extensive research, continued developing my knowledge and coaching skills, and earned my USA Weightlifting Level 1 (USAW Level 1) Certification.

When I ultimately decided to retire from basketball, I shifted my full attention toward helping others through fitness. In March 2017, I founded my brand, PhD Fitness OKC, and have continued to build upon that vision ever since.

In 2019, I launched my signature group fitness class, The Breakfast Klub, creating an environment where people of all fitness levels could come together, move their bodies, challenge themselves, and—most importantly—have fun. The program was designed to make fitness accessible, energetic, and enjoyable while building a sense of community.

My mission is simple: to help people become the best version of themselves.
The philosophy behind PhD Fitness comes from the belief that we should “exercise the mind just as much as we exercise the body at the highest level possible.” The name PhD represents the highest level of academic achievement and serves as a reminder that personal growth requires continuous education, discipline, and a commitment to becoming better.

Throughout my journey, the people I have encountered and the opportunities I have experienced have reinforced my belief that I was created for this purpose. I believe it is my responsibility to serve others, provide hope, and encourage people to recognize their potential regardless of gender, age, ethnicity, or background.

Above all, my faith guides my purpose. I believe God has a plan for my life, and I consider it a privilege and responsibility to use the gifts, experiences, and knowledge I have been given to serve others and positively impact the people around me.