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Starting something new can be intimidating. When you walk into Underlying Strength, we realize you carry with you insecurity and self doubt. Stress at work. Challenges with your family. Disappointments from your past. We cannot promise to make the difficulties of life disappear. But we can promise that everytime you show up. Every time you push for one more rep. Every time you run a little faster. You will leave here with a sense of accomplishment and perseverance that will help you no matter what comes your way. It is our honor to witness growth and change in our members every day, and we hope we can do the same for you. 



 Certified Fitness Trainer  and Founder 

Sidney Turner, owner of Underlying Strength, is passionate about fitness, healthy living, and coaching clients to unlock their own potential and reach fitness goals.


With 10 years of experience in fitness training, Sidney has professionally trained in a variety of settings including corporate fitness centers, private training facilities and in-home.


In 2016, he opened the Underlying Strength facility in Yardley, Pa. to foster a nurturing and supportive environment, where members receive personalized goal-setting and training services to achieve maximum results.


Sidney says what he loves most about his career is helping people help themselves to become stronger not only in the gym, but in everyday living.

Sidney has a Bachelor’s Degree in Health and Sports Sciences. His specialties include: balance and flexibility; muscular dysfunctions; Olympic-style lifting; paraplegic exercises; plyometric and posture assessments; sports performance; and strength training.

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